Bruh, a lil advice if you don't mind. First of all, you shouldn't be "paying" a mentor. That's sucker sh*t. I made the same mistake starting out, if anybody is down for the music and the love, they'll show you for free. Plus, there are so many tutorials and books regarding making music with Ableton, that you really don't need a mentor. You only need time and consistent practice. Watch youtube videos on making beats with Ableton, there are tons.
Now a mentor can help speed up the process, but it will ultimately come down to you, and the time and effort you put it, which is why I say you really don't need a mentor. You only need to practice, practice, practice.
I read your mention about a MIDI keyboard, if you want one for practicing piano I would recommend that you get one with at least 49 keys, 61 or 88 preferably. Alesis makes good MIDI controllers that balance functionality and cost, I personally like the
Alesis V49 myself. It's available as a 61 key version as well.
A few books to help you out on your journey:
Producing Music With Ableton Live 9
Mixing Secrets For The Small Studio by Mike Senior
The Pop Piano Book by Mark Harrison
I have Ableton Live Intro 8, I'm a Reason user and I can get my ideas out more quickly with Reason as that's what I started out on, but Ableton Live is cool too. The two books I recommended, Mixing Secrets and the Pop Piano book, are heaven sent. They helped me to get my playing skills up, and my mixing skills on par as well.
Hell I'll be your mentor for free. Just hit me up.