controls should already be known. If you don't, this is a good tutorial https://scratch.mit.edu/projects/786258984/ for the following: Wallbounce Hyperdash (extended) Superdash (extended) Wavedash Neutral Jump Buffered Hyper/Superdash (I like to call it a "slamdash")
Somehow found a Celeste D1-Side so I remixed it from my ALT account and now you can do D1-Side!!! Good Luck! I really don't know where it was originally created, but I think it's the guy that made D2-Side...