So I am really confused about the opposition in Syria? Are they several groups, varying in degrees when it comes to terrorism and extremism?

I think the main group is an offshoot of Al-Qaida, but I haven't been following the story that closely.

They're not quite ISIS but rather a coalition that's centred around an ISIS splinter that isn't as openly batshit insane.

I think what does matter is they're still Islamists, and they're backed by Turkey who certainly have designs on the region.

Yes there are several groups, ISIS or its remnants being one. Degrees of terrorism and viciousness vary amongst them, but they are all horrible. Of course, so was Assad.

I look on it as a necessary step towards getting an actual decent govenment for Syria, but there are a LOT of steps between here and there

Several groups, biggest (or the coalition as whole?) being sponsored by Turkey from what I've read

Me too. I just hope it goes ok.. i have lots Syrian friends who fled. I know they want to return to their beautiful country..

No they were not behind the last moves. Them and Alnusra had connections in the past but the current Elgolany left them years ago and strarted becoming a modern and a more mature version of himself and he admits to being wrong in the past according to his own words on CNN. That's where he kept insisting on protecting all minorities. The full interview is on YouTube.

That's why I said that I hope that he's honest but again only time will tell. I still have hundreds of questions like you but maybe they get lucky right?

Apparently the West, USA through Turkey, funded a pro Israel branch of Al quaida that has taken Syria. Now Israel has moved in to occupy just part Syria for now. Seems like greater Israel is expanding.

No, ISIS is not a member of the opposition and would be considered at war with them.