Purification quest:
On the "The Purification" quest for the Dark Brotherhood, use the following trick to easily kill some of the members in the santuary such as Ocheeva and Vincent. First. get your Disposition with them as high as possible, then sneak attack them with a dagger. Before they have a time to retaliate, propose a yeild. You can attack and yeild repetedly until they are killed.

Lex quest: Different weapons:
While doing the ''Taking Care Of Lex" quest for the Thieves Guild you must to scald the paper with Lex's seal. Just beside the desk where the seal is, you will see a chest. If you came in the door directly behind the chest you will get an Elven longsword, Glass longsword, Orcish helmet, and a Mythril sheild. If you came in from the door upstairs you will get an Elven longsword and Dwarven greaves. If you came in the exact entrance you cannot open the chest.

Bruma: Escaping from jail:
If you get sent to jail in Bruma, you will be in a cell with another person named Jorundr. If you punch him once, the jailer will unlock your cell, kill Jorundr, and leave the cell door open. You can now escape from jail by killing the jailer or sneaking out. You can only do this once. Note: Jorundr is a character in the "Two Sides of the Coin" quest. If you kill him, you cannot complete the quest. Do not kill him until you finish the quest.

Leyawin: Horse racing:
You first need to get a black horse (for example, at the stable by Chaydenhall). Go to Leyawin and start up the road to the right that does not go to Bruma. Go follow the road for awhile. Ignore the small town to your right. Go a little past the town and a woman on a black horse should cut you off. Note: This may not work every time. You must be at that location at 6:45 to 7:00 a.m.