My boyfriend has recently started playing WOW as an Undead Warlock, however after receiving the life drain spell can't learn it as it says to find the trainer, but does not appear in the trainer's menu. Can anybody help with this?
Thankyou honigal5566, but he's tried all of that and it just doesn't seem to be working. If anyone else has any ideas please reply

Press "P". That brings up your spellbook, look for drain life, if it's not there go to trainer and make sure "available" is checked.