There are videos for 1.15.2 setup. I've tried it a few days with no prior Java experience and things seem working fine. Just go on youtube and search for "minecraft modding tutorial 1.15", you can't miss em. Knowing Eclipse from working with it some ~10 years ago I elected to try IntelliJ and I like it, for now.
Oof ? Maybe development as a whole, but Java as a language? Why not?
The videos essentially get you through the Getting Started in the documentation. You can also get more information in the README.txt indluded in the mdk.
Such as :
Admittedly, following those instructions were more natural to me than following the videos.
