Everyone progresses a little differently and some find certain tricks easier than others, so there is no set in stone progression chain, but some good fundamentals.
Swap 270s out
270 on 270s out
After you have learned these and can do them on multiple features you should have a super solid base and be able to learn anything like 450s on, super feds, dub swaps, and whatever rail combos you want.
Also, while learning those tricks some fun ones to try are backslide, rail hand drag, safety slide, 50 50s, just stuff like that.