So ive got the conjuration ritual spell to summon the dremora but when i use it nothing happens. and when i talk to the destruction mage to get the destruction ritual spell she doesnt give me the quest for it, this almost ruins my mage character.

If you are attempting to use the spell "summon unbound dremora" that spell only works in one place for a quest...

If not... I really don't know what to tell you...

As far as this "destruction ritual spell" goes... I'm not sure what spell you are specifically referring to.... or what quest either.... can you be more specific?

Whats the point of getting the unbound dremora if you cant use it? All the magic schools have quests you can do when you get to 90 skill lvl.

You CAN use it to summon an unbound dremora lord who in turn gets you a sigil stone.... you give the sigil stone to the conjuration guy and he gives you a spell you CAN use...
(In my game it was Flame Thrall... idk if it differs) http://elderscrolls.wikia.com/wiki/Conjuration_Ritual_Spell

Also... that is not the only spell in the game that has only one real use... there is a spell you get for heating dwemer convectors too...

It is 100.... and I was unaware it was known as a ritual spell until now.... but anyway...
google is your friend...

Check here for the http://elderscrolls.wikia.com/wiki/Destruction_Ritual_Spell

No you can start them at 90 skill lvl, why is the summon unbound dremora spell still in my magic inventory, kinda weird, but for the destruction one im supposed to get from Faralda or whatever her name is but she isnt giving me the quest.

90 is for conjuration..... destruction is 100

huh i wonder why you can start the conjuration and alteration ones at 90.