diff --git a/README.md b/README.md
index 7c787c3..91f4ada 100644
--- a/README.md
+++ b/README.md
@@ -6,46 +6,41 @@
   <img alt="Version" src="https://img.shields.io/badge/version-1.0-blue.svg?cacheSeconds=2592000" />
 </p>
 
-> In this project you will learn the basic notions of the famous PHP language which is so used in the world of web development.
+> This project shows some guidelines of basics concepts of PHP.
 >
-> What distinguishes PHP from other languages ​​such as Javascript is that the code is executed on the server, generating HTML and sending it to the client.
 
 ## Index <!-- omit in toc -->
 
 - [Requirements](#requirements)
-- [Repository](#repository)
 - [Technologies used](#technologies-used)
+- [Organization](#organization)
 - [Project delivery](#project-delivery)
 - [Resources](#resources)
 
 ## Requirements
 
 - Learn the basics to program in PHP
-- Understand what a server-side language is and what it is used for
-
-## Repository
-
-First of all you must fork this project into your GitHub account.
-
-To create a fork on GitHub is as easy as clicking the “fork” button on the repository page.
-
-<img src="https://docs.github.com/assets/cb-23088/images/help/repository/fork_button.png" alt="Fork on GitHub" width='450'>
+- Understand how to use Xampp
+- Improve GitHub
 
 ## Technologies used
 
 \* PHP
 
-## Project delivery
+## Organization
+
+- Understand pill
+- Install Xampp
+- Create differents blanks of content
+- Write README
+- Do de pull request.
 
-To deliver this project you must send a Pull Request as explained in the Students Handbook. Remember that the PR title must be with the format 
-- Solution: + NAME AND SURNAME or TEAM NAMES AND SURNAMES.
-- For example: "Solution: Josep Riera", "Solution: Josep Riera, Toni Suárez, Marta Vázquez"
 
 ## Resources
 
 - [What can PHP do?](https://www.php.net/manual/es/intro-whatcando.php)
 - [Sample guide for README](https://gist.github.com/Villanuevand/6386899f70346d4580c723232524d35a)
+- [PHP Tutorials](https://www.w3schools.com/php/)
 - [XAMPP](https://www.apachefriends.org/es/index.html)
 - [How to install XAMPP on Windows](https://www.youtube.com/watch?v=h6DEDm7C37A)
-- [What is a web server?](https://www.youtube.com/watch?v=Yt1nesKi5Ec)
-- [Web server basics](https://www.youtube.com/watch?v=3VqfpVKvlxQ)
+
diff --git a/arrays.php b/arrays.php
new file mode 100644
index 0000000..939d224
--- /dev/null
+++ b/arrays.php
@@ -0,0 +1,53 @@
+<?php
+
+#SIMPLE ARRAY STRING
+
+$fruits = ["mango", "kiwi", "apple"];
+var_dump($fruits);
+echo "<br><br>";
+
+#SIMPLE ARRAY NUMBERS
+
+$numbers = [1,2,3,4,5];
+var_dump($numbers);
+echo "<br><br>";
+
+
+
+#MULTIDIMENSIONAL ARRAY
+
+$multiArr = [[1, 2], [2, 3], [4, 5]];
+var_dump ($multiArr);
+echo "<br><br>";
+
+#LENGTH ARRAY
+
+$length = count($multiArr);
+var_dump($length);
+echo "<br><br>";
+
+#COMBINATION ARRAYS
+
+$combi = array_merge($numbers, $fruits);
+var_dump($combi);
+echo "<br><br>";
+
+
+#RETURN LAST NUMBER
+
+$lastN = end($numbers);
+var_dump($lastN);
+echo "<br><br>";
+
+
+
+#ADD NEW ELEMENT
+
+$newE = array_push($fruits, "orange");
+var_dump($newE);
+echo "<br><br>";
+
+
+
+
+?>
\ No newline at end of file
diff --git a/conditionals.php b/conditionals.php
new file mode 100644
index 0000000..a982d2a
--- /dev/null
+++ b/conditionals.php
@@ -0,0 +1,76 @@
+<?php
+
+#CONDITION
+
+$date = new DateTime();
+
+
+#CURRENT DAY
+
+$currentDay = $date->format('D');
+
+if ($currentDay == 'Mon') {
+    echo "We are on Monday";
+} 
+
+echo '<br><br>';
+
+#CURRENT MONTH
+
+$currentMonth = $date->format('M');
+
+if ($currentMonth == 'Oct') {
+    echo "We are in October";
+} else {
+    echo "We are in $currentMonth";
+}
+
+echo '<br><br>';
+
+
+
+#CURRENT MINUTE
+
+$currentMinute = $date->format('i');
+
+if ($currentMinute < 10) {
+    echo "The current minute is less than 10";
+} else if ($currentMinute > 15) {
+    echo "The current minute is more than 15";
+} else {
+    echo "Does not meet any conditions";
+}
+echo '<br><br>';
+
+#SWITCH
+
+switch ($currentDay) {
+    case 'Mon':
+        echo "Start the week of classes";
+        break;
+
+    case 'Tue':
+        echo "Second day of classes";
+            break;
+
+    case 'Wen':
+        echo "Third day of classes";
+            break;
+
+    case 'Thu':
+        echo "Fourth day of classes";
+            break;
+
+    case 'Wen':
+        echo "Last day of classes";
+            break;
+    
+    default:
+        echo "Is weekend";
+        break;
+}
+
+
+
+
+?>
\ No newline at end of file
diff --git a/dates.php b/dates.php
new file mode 100644
index 0000000..e856d45
--- /dev/null
+++ b/dates.php
@@ -0,0 +1,31 @@
+<?php
+
+#DATETIME Y-M-D
+
+$date = new DateTime;
+
+echo $date->format ('Y-m-d');
+
+echo '<br><br>';
+
+#CURRENT DAY ANY FORMAT
+
+echo $date->format ('Y-m-d H:i:s');
+echo '<br><br>';
+
+#CURRENT DAY
+
+echo $date->format ('D-d');
+echo '<br><br>';
+
+#CURRENT MONTH
+
+echo $date->format ('m');
+echo '<br><br>';
+
+#CURRENT MINUTE
+
+echo $date->format ('i');
+
+
+?>
\ No newline at end of file
diff --git a/functions.php b/functions.php
new file mode 100644
index 0000000..29e59b7
--- /dev/null
+++ b/functions.php
@@ -0,0 +1,58 @@
+<?php
+
+#FUNCTION SUM
+
+function sum($x, $y) {
+    return $x + $y;
+}
+
+echo sum(2,4);
+echo "<br><br>";
+
+#FUNCTION MULTIPLICATION
+
+function multiply($x, $y) {
+    return $x * $y;
+}
+echo multiply(2, 4);
+echo "<br><br>";
+
+
+#FUNCTION DIVISION
+
+function division($x, $y) {
+    return $x / $y;
+}
+echo division(4, 2); 
+echo "<br><br>";
+
+
+
+#OPERATION
+
+function operation($x, $y, $op)
+{
+    switch ($op) {
+        case "+":
+            return sum($x, $y);
+            break;
+        case "*":
+            return multiply($x, $y);
+            break;
+        case "/":
+            return division($x, $y);
+            break;
+        default:
+            return "Error";
+            break;
+    }
+}
+
+echo operation(4, 2, "/");
+echo "<br><br>";
+
+
+
+
+
+?>
\ No newline at end of file
diff --git a/iterators.php b/iterators.php
new file mode 100644
index 0000000..37cf19e
--- /dev/null
+++ b/iterators.php
@@ -0,0 +1,48 @@
+<?php
+
+
+#FOR
+
+for($i = 0; $i <= 5; $i++){
+
+    echo $i;
+}
+
+echo "<br><br>";
+
+#FOREACH
+
+$a = [1, 2, 3, 17];
+
+foreach ($a as $v) {
+    echo $v;
+}
+
+
+echo "<br><br>";
+#WHILE
+
+$number = 1;
+
+while($number < 10) {
+
+    echo $number;
+    $number++;
+
+}
+
+
+echo "<br><br>";
+
+#DO WHILE
+
+
+$n = 1;
+do {
+    echo $n;
+    $n++;
+
+} while ($n <= 5);
+
+
+?>
\ No newline at end of file
diff --git a/math.php b/math.php
new file mode 100644
index 0000000..468811b
--- /dev/null
+++ b/math.php
@@ -0,0 +1,37 @@
+<?php
+
+
+$x = -4.24;
+
+echo "<br><br>";
+
+#ABSOLUTE
+
+var_dump(abs($x));
+echo "<br><br>";
+
+#ROUNDED
+
+var_dump(round($x));
+echo "<br><br>";
+
+
+#HIGHEST VALUE
+
+echo(max(0, 150, 30, 20, -8, -200));
+echo "<br><br>";
+
+#LOWEST VALUE
+
+echo(min(0, 150, 30, 20, -8, -200));
+echo "<br><br>";
+
+#RANDOM NUMBER
+
+echo(rand());
+echo "<br><br>";
+
+
+
+
+?>
\ No newline at end of file
diff --git a/operators.php b/operators.php
new file mode 100644
index 0000000..c61016b
--- /dev/null
+++ b/operators.php
@@ -0,0 +1,85 @@
+<?php
+
+$x = 10;  
+$y = 6;
+
+#ARITHMETIC OPERATORS
+
+var_dump($x + $y);
+echo "<br><br>";
+
+var_dump($x - $y);
+echo "<br><br>";
+
+var_dump($x * $y);
+echo "<br><br>";
+
+var_dump($x % $y);
+echo "<br><br>";
+
+#COMPARISON OPERATORS
+
+#Equal
+
+var_dump($x == $y);
+echo "<br><br>";
+
+#Not equal
+
+var_dump($x != $y);
+echo "<br><br>";
+
+#Less than
+
+var_dump($x < $y);
+echo "<br><br>";
+
+#Grater than
+
+var_dump($x > $y);
+echo "<br><br>";
+
+#Less than or equal to
+
+var_dump($x <= $y);
+echo "<br><br>";
+
+#Grater than or equal to
+
+var_dump($x >= $y);
+echo "<br><br>";
+
+#LOGICAL OPERATORS
+
+#And - True if both $x and $y are true
+
+var_dump($x && $y);
+echo "<br><br>";
+
+#And - True if both $x and $y are true
+
+var_dump($x and $y);
+echo "<br><br>";
+
+#Or - True if either $x or $y is true
+
+var_dump($x || $y);
+echo "<br><br>";
+
+#Or - True if either $x or $y is true
+
+var_dump($x or $y);
+echo "<br><br>";
+
+#Not - True if $x is not true
+
+var_dump($x ! $y);
+echo "<br><br>";
+
+#Xor - True if either $x or $y is true, but not both
+
+var_dump($x xor $y);
+echo "<br><br>";
+
+?>
+
diff --git a/phpinfo.php b/phpinfo.php
new file mode 100644
index 0000000..9782ad8
--- /dev/null
+++ b/phpinfo.php
@@ -0,0 +1,14 @@
+<?php
+
+
+function getPHPINFO()
+{
+    return phpinfo();
+}
+
+getPHPINFO();
+
+
+
+
+?>
\ No newline at end of file
diff --git a/print.php b/print.php
new file mode 100644
index 0000000..9817f9c
--- /dev/null
+++ b/print.php
@@ -0,0 +1,17 @@
+<?php
+
+#ECHO
+
+echo "First echo instruction<br>", "Second echo instruction<br>";
+
+#PRINT
+
+print "Print instruction <br>";
+
+#PRINT_R
+
+$letters = ['a','b','c','d','e'];
+print_r ($letters);
+
+
+?>
\ No newline at end of file
diff --git a/strings.php b/strings.php
new file mode 100644
index 0000000..23c7009
--- /dev/null
+++ b/strings.php
@@ -0,0 +1,78 @@
+<?php
+
+#TEXT
+
+$txt = "Hello";
+echo $txt;
+
+echo "<br><br>";
+
+#TEXT VARIABLE
+
+echo "I said " . $txt . "<br><br>";
+
+
+#CONCATENATE
+
+$txt2 = "World";
+
+echo "I said " . $txt . " " . $txt2;
+
+echo "<br><br>";
+
+#CASE SENSITIVE
+$txt3 = "My car is white";
+echo str_replace("white", "red", $txt3);
+echo "<br><br>";
+
+#REPLACE TEXT IN A STRING
+
+$txt4 = "My car is WHITE";
+echo str_ireplace("white", "red", $txt3);
+echo "<br><br>";
+
+#WRITE TEXT N TIMES
+
+$txt5 = "It's sunny day <br>";
+
+echo str_repeat($txt5, 3);
+echo "<br><br>";
+
+
+#OBTAIN THE LENGTH
+
+echo strlen($txt);
+echo "<br><br>";
+
+
+#OBTAIN POSITION
+
+echo strpos($txt2, "o");
+echo "<br><br>";
+
+#CAPITALIZED
+
+$txtU = strtoupper($txt);
+echo $txtU;
+echo "<br><br>";
+
+#LOWERCASE
+$txt2L = strtolower($txt2);
+echo $txt2L;
+echo "<br><br>";
+
+#OBTAIN TEXT SUBSTRING FROM A GIVEN POSITION
+
+echo substr($txt, -3);
+echo "<br><br>";
+
+
+
+
+
+
+
+
+
+
+?>
\ No newline at end of file
diff --git a/types.php b/types.php
new file mode 100644
index 0000000..7758071
--- /dev/null
+++ b/types.php
@@ -0,0 +1,66 @@
+<?php
+
+#BOOLEAN
+
+$x = true;
+$y = false;
+
+echo "<br><br>";
+
+#INTEGRER - non decimal number between -2,147,483,648 and 2,147,483,647
+
+$x = 5985;
+var_dump($x);
+
+echo "<br><br>";
+
+#FLOAT -  is a number with a decimal point or a number in exponential form
+
+$x = 10.365;
+var_dump($x);
+
+echo "<br><br>";
+
+
+#STRING
+
+echo 'this is a simple string';
+
+echo "<br><br>";
+
+#ARRAY 
+
+$cars = array("Volvo","BMW","Toyota");
+var_dump($cars);
+
+$array = [
+    "foo" => "bar",
+    "bar" => "foo",
+];
+
+echo "<br><br>";
+
+#OBJECT
+
+$fruits = (object)[
+    "fruit 1" => "mango",
+    "fruit 2" => "apple",
+    "fruit 3" => "kiwi",
+];
+
+var_dump($fruits);
+
+echo "<br><br>";
+
+
+#NULL
+
+$x = "Hello world!";
+$x = null;
+var_dump($x);
+
+echo "<br><br>";
+
+
+
+?>
\ No newline at end of file