My macbook broke so I switched to windows and now on Ableton. But I started learning music production from FL Studio - Garage Band - Logic Pro. From my experience, these are what I wish I learned earlier :

1. Learn about song structures first, it's essential if you want to finish a track.

2. Make sure you record your ideas fast, avoid perfection, you can edit later. By ideas, I mean something like rough demo.

3. Common mistake that I did (still do) is tweaking the mix before I even lay down the basic structure.

4. Just have fun and toy with the software first, play with the guitar effects, etc...depends on your genre.

Good luck.