There is no substitute for real dick, once you become comfortable you can feel pleasure you never knew was possible.
I started with a butt plug set, if you're patient and use lots of lube it will start to feel good pretty quick.
I also got a dildo with a suction cup, took the top of my toilet and put it on a towel on my bed. Stuck the dildo to it, get on it. Very similar to riding a real cock and you control everything.