Update README.md

Author: BenHerbst

README.md

@@ -68,6 +68,7 @@ _At the moment, todolist, calendar and kanban are implemented, more are coming s
 _How do I do that?_
 
 **For Windows:**
+
 Download the .exe file at https://github.com/BenHerbst/idaesbasic/releases/tag/0.9.1.
 
 You maybe have to expand the "Assets" menu.
@@ -78,6 +79,34 @@ Then, if downloaded and found in the Explorer, double click on it and an install
 
 There you just have to follow the steps and Idaesbasic is ready to use!
 
+**For Linux:**
+
+Download the .deb ( currently unavaible ) or .jar file at https://github.com/BenHerbst/idaesbasic/releases/tag/0.9.1. ( .deb is only for Debian or Debian based Linux like Ubuntu, Linux Mint or Pop!_OS )
+
+Then open your file explorer. Go to "Downloads" and find the .deb or .jar file
+
+If you downloaded the .deb for Debian or Debian based Linux, just double click the .deb and follow the install instructions.
+
+If you got the .jar, which also runs on Arch, Manjaro or VOID Linux, you also have to get Java 17.
+The best way to install it is to go to https://jdk.java.net/17/ and read the install instructions there or go to Google and check how to install Java 17 or Openjdk 17 on your system.
+
+There is also jdk-openjdk on Arch and Manjaro: pacman -S jdk-openjdk.
+
+After the installation of Java 17, go to the file explorer, find the .jar and double click it. If that not work, open a Terminal window and execute:
+
+1. cd Downloads
+2. java -jar (" The file name of the .jar file ")
+3. if Idaesbasic doesn't start, copy the text of the Terminal window of take a screenshot and report it at https://github.com/BenHerbst/idaesbasic/issues. You have to get a Github account.
+
+_I would love it when anyone could help me creating a flatpak of this project!_
+
+**Macos:**
+There is currently **no** Macos version. You have to self compile it with Maven and Java 17 from https://github.com/BenHerbst/idaesbasic/tree/0.9.1.
+
+I don't own a Macos device. Apple restricts you to own a Macos device to create a package for Macos.
+
+Maybe someone with a Mac device could help me?
+
 </br>
 (2) Click on "Projects" -> "Add project" and select a folder
 </br>