Mission#2:get notes from the fighters guild:head over the river in the middle of town and look for 2 twin buildings with wooden signs that read mages guild and fighters guild(go in that last one) head down the stairs and keep going till you reach a door at the end of the hallway, inside will be 2 ppl, talk to the man and he will tell you to retrive the dwemer puzzle cube.   now head south out of balmora and make a left on the double bridges head down that path and when you see a fort make a left up a steep hill. go across the bridge and kill the man who attacks you.  go to the right off the bridge and hit the small C shaped crank on your left on a pipe now quickly run into the building ahead that has now opened. now your inside go down the path and get to the bottom level. kill the man if he attacks you and go up the smaller rock path on your left while facing the large wall of doors.  go in kill the boss (his name not really a boss) and look at the first shelf on your left the cube will be there now head back to balmora and give it to the nice man in the fighters guild talk to him about the notes and give those to casius.

 

Mission#3:get the notes from mages guild orc:once youve gotten this quest from casius, go to the the mages guild and head to the basement. on your left theres an orc who will send you to a tomb near peligald.go out to the large bug again and tell him to go to saydanine. make a right and go through the passage in the montains on your left make a left again and look left while you head forward, you should see the tomb. go in and get it head back get the notes and give them to casius. ( fairly simple)