I do have Midas Magic installed, but I just saw this YT clip http://www.youtube.com/watch?v=RZOqCL01M2M
There seem to be some spells I haven't found in the book in Midas shop. Why are they missing? I haven't got many of the bound spells which I can see in the clip, is it because I have not got obge or something?
I don't remember to have seen Midas Bomb and Midas Blood Worms either.

If they're not in the book, then they're not in the book. They must be elsewhere!

It's not just a magic mod, it is a quest mod too. I think I've said too much

No no, please go on, how do I start the quest? I'm not at home so can't read any readmes and wonna know now :liplick:

The readme does not say how to begin the quest, because there are not conventional quests for the spells aside fro the weretiger, the balrog and the beholden.
For the other ones you should really explore... starting in the place in which you gain knowledge of these spells

http://www.uesp.net/wiki/Tes4Mod:Midas_Magic/FAQ

Ok, but am I right about I have to have OBGE installed for some of the spells to work. I mean, in the clip I have linked, I see a sword made from flames and it looks too good to be possible without OBGE, I guess.

Haven't seen the clip but not if it's spells from the official release. The latest Midas is 0995 and it doesn't require OBGE.