Hi Eduardo, I haven’t encountered any difficulties with doing modeling courses in 2.8 (I even prefer 2.8 for this!). The only thing I still do in 2.79 is animating, because the tools for that are annoyingly hidden and harder to use in 2.8. Other than that, 2.8 works really well for the rest 😊
You might have to look for some stuff due to UI and shortcut changes, but if you’ve been using Blender for a while (and I believe you do) then you’ll get used to it pretty fast 😎👍🏻
