The easiest way of killing the Lightning Imps in Anor Londo is to go to the hall with Giant Knights and climb out of the broken window. Go to the right, drop down behind the fence and collect the item, then kill the imps through the fence with your bow and arrows. When you have killed the Imps walk through the hole in the fence and open the gate next to where the Stone Guard was standing and kill the other two Imps. Doing this will create a shortcut to the first bonfire and the Giant Blacksmith.
The easiest way to defeat the giant on the roof before the golem in Anor Londo is to stand in the doorway and hit his legs. When the giant attacks go down the stairs. Keep repeating this process until he falls to his knees then use a two-handed attack with your weapon to finish him off.
Use the Dragonhead Stone and use it, put the soul you wish to multiply after the stone, equip the grass crest shield, turn your chracter away from the camera, press and hold X turn your character to the camera press down on the D-Pad realease X for a second and hold it again, done the numbers will go high and high. PS: The "largest" the souls the faster the numbers will rise.