I can't recommend Audible Genius's Building Blocks course enough. It teaches many fundamental music composition techniques and ear training using a piano roll layout (like the one found in Ableton and other DAWs). It's very inexpensive and you will absolutely develop a great foundation for writing your own music while going through the course. You'll learn drum programming, rhythm, harmony, melody, and more, and it will directly translate into Ableton. There's a 7-day free trial as well.
Thank you, looks like exactly what I need!
For some reason I've got only 3-day trial, but considering the price and upcoming weekend it seems reasonable for me.
https://www.audiblegenius.com/buildingblocks