... the Start IDE button. "IDE" means "Integated Development Environment" which is just a fancy name for the normal Lazarus desktop screen. You won't see this again next time you start Lazarus. 4. click the File> Open... menu item, and navigate to the previously downloaded TemplotMEC files. Select and open the file: templotmec.lpi 5. answer Yes or Open Project to any questions which come up. 6. You should then be seeing something like this (the windows may be arranged differently): 2_091532_490000000.png 7. if the Project Inspector window is showing (not the Object Inspector), you can close it. 8. if the Source Editor window is missing or empty, click the Project> Units... menu item, and select control_room.pas from the list. You are now ready to try compiling TemplotMEC. 9. as this is a first try, it's best to do a full build to check for errors before running. Click the Run> Build menu item: 2_101623_400000000.png 10. it will take a while ...