Add basic Linux tutorial

docs/tutorials/linux.md

@@ -0,0 +1,20 @@
+---
+title: "Linux"
+parent: Tutorials
+---
+
+# Linux Installation
+
+## Flatpak (Recommended)
+
+If your system does not already have Flatpak installed, please do so by following the instructions on [flatpak.org](https://www.flatpak.org/setup/)
+
+Once Flatpak is installed (can test by running `flatpak` in the terminal), you will also need to install the [Flathub repository](https://flathub.org/) by running `flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo`
+
+<!-- Next you will need to install the Freedesktop Platform runtime 22.08, by running `flatpak install org.freedesktop.Platform/x86_64/22.08` -->
+
+Now you can download the Cake Wallet Flatpak from the releases on GitHub https://github.com/cake-tech/cake_wallet/releases and select the Cake_Wallet_vX.X.X.flatpak file to download. (Example:  Cake_Wallet_v4.18.2_Linux.flatpak)
+
+Assuming the Cake Wallet flatpak is in the Downloads directory, you can install it with this command `flatpak install ~/Downloads/Cake_Wallet_v4.18.2_Linux.flatpak` (Change the version number to the one you downloaded)
+
+After confirming the installation, you can now launch Cake Wallet from your shortcuts, or run it manually by using `flatpak run com.cakewallet.cake_wallet`