New to this game (Steam Version) any help would be nice

Hey there! On steam version you can only save 5 levels to practice individually. I'd say to save gene gadget and panic puppets (both acts) plus volcano 1 or 2. Rusty Ruin kills a ton of runs, but you'll get a lot of them making it to that level since it's the second one. For more info check the best runs for this game to learn some minor shortcuts.