Get yourself a entry level DSLR first. To be honest any camera will be capable enough as long as it has decent M, Av/A, Tv/S modes that allows your inputs for the controls.

Agreed that you should not prioritize on getting a prime lens first. High chance is that you will be frustrated that you can't zoom ( 99% of my friends who handled my camera with a prime lens couldn't understand why they cant zoom ). Not to mention the frequent needs to change lenses will be extremely troublesome for someone new.