I'm using my Vampire Lord quite a lot now, and only once when I've used it I've had the 2 spells in either hand, can someone tell me how to equip them, or use them?
Use the D pad to access the favourites menu when in vampire lord form. It'll give you access to your other spells. Then just press A on whichever you want.
I've managed to figure it out now, had to push down Left Stick to access them!
Thanks!
Oh, then you were in melee form. Vampire lord has two forms, melee and magic. As you have just discovered you click the left stick to change between them.
I'm fairly sure it gives an almost condescending explanation of how everything works when you become a Vampire Lord, and if you want even MOAR explanation you can talk to Harkon and he'll give you the whole thing all over again...