The Vampire Lord differs from a normal Vampire as it's form can only be accessed by accepting Lord Harkon's gift at the Vampire Keep. This part is only made available after rescuing his daughter during the quest 'Bloodline', which is the first dungeon as part of the Dawnguard DLC.
If you enchant each armor piece you will be able to reduce magicka cost by 25%. Enchant ALL four pieces and Magicka costs nothing. This glitch is great for unlimited healing and other large destruction spells.
Watch the video below to find the Dawnstar chest which is actually the travelling khajit merchants chest. As with most shopkeeper inventories it will respawn it's contents every 2-5 in game days and the loot it gives will be better depending on your characters level.
The following video will show you how to get a 'DO NOT DELETE' chest/box in Skyrim. It is worth getting as it floats and can be used to reach high places. It can also make it easier to find other 'DO NOT DELETE' chests because if you drop it when you fall you can land on it.
1) Place platter against wall on the right side of the Jarl's bed in Whiterun.
2) Push into the platter to get through the wall.
3) Keep pressing the select button (depending on console, X/B) to get the Do Not Delete chest.