You will alway be learning it seems and feels but that's part of what makes it exciting.
Post up some pics when you have the time.
You're tank sounds like a pretty good set up. Only thing I hear is that you might have added the fish to early or caused a cycle when you upgraded. But I could be wrong... Im for sure not the pro around here.
You're search might have begun with a simple skimmer question but feel free to ask/post/comment on most anything around the site.
Oh, btw... Did I mention pics? Haha. Ya, pics! ASAP! Pics Pics Pics!