diff --git a/README.md b/README.md
index f34ffc5..1ec5536 100644
--- a/README.md
+++ b/README.md
@@ -43,11 +43,20 @@ plot_correlation_heatmap(ccrcc, indicate="condition", exp="TMT")
 
 
 ## Developer guide
-- `devtools::build()` and `devtools::test()`
-- `devtools::document()` when you add a function
-- `usethis::use_import_from("package name", "function name")` to include dependencies
-- Use `lintr` and `styler` to improve code quality
+- Start project `renv::init()`:
+You may see message similar to this
 ```
-lintr::lint_package()
-styler::style_pkg()
+* Using Bioconductor version '3.18'.
+This project already has a lockfile. What would you like to do? 
+
+1: Restore the project from the lockfile.
+2: Discard the lockfile and re-initialize the project.
+3: Activate the project without snapshotting or installing any packages.
+4: Abort project initialization.
 ```
+We recommend to choose 2 here to initialize the project since some dependencies depend on the R version and bioconductor version use
+- You may use `lintr::lint_package()` and `styler::style_pkg()` to make sure coding styles consistent
+- `devtools::build()` and `devtools::test()` to build and test the package, respectively
+- `devtools::document()` when you add a function
+- `usethis::use_import_from("package name", "function name")` to include dependencies
+