I started DJ'ing last year I'd almost start there with a FLX4 just to get in to the music more.

I just started with Ableton recently working on remixing tracks I like. Actually working on a remix of Ella Langley's Be Her just because I thought it was a cool genre bending remix.

After you do some remixes creating your own from scratch will be easier.

Mimicing songs and artists you like is a good recommendation, you can also cut up and remix parts of songs you like.

I used to use Soundtrackers a lot on Amiga in the 90s. I'm also pretty ok with using Reaper as a DAW playing all the instruments. I would have no idea how to get into remixing though. How would you suggest starting that? Do you tend to start with isolated tracks or just the whole mp3 and take sections and move around and add parts>