So I just need some general tips, tricks to executing X into Y, when to use HK, LK etc. Relatively new, so I need as much help as I can get! Also, how long would you suggest practicing for? Thanks!
You’re welcome! 
You’re never gonna be done practicing man
Anyway, you should check out OneHandedTerror’s videos. They’re pretty old from when SF4 first came out, but a lot of it is still very helpful to this day