I wanted to start speed running nsmb2 but I need a really detailed tutorial witch I can't find anywhere I also need help finding splits. And keep in mind I am very new. I feel stupid for asking this because i'm sure everyone else knows this but me.

I'm someone who wants to start speedrunning and need to set up LiveSplit but I cant find a helpful guide and don't know what splits to use. Please help, I am extremity new too so anything really detailed would help a lot, Thanks.