Tob's Blender 2.5 Foot Rigging Tutorial 9/10 The Second Leg part 1

[TheHitez]

A tip for all future viewers, a better way to handle the bones when you check its normals and find that it doesn't align with the global normals (and you then have to lock the X axis when you really think you should be locking the Z axis to get it to rotate corectly), is to make sure as you are extruding bones to hit the "Ctrl + N" key combo and re-calculate the bone's roll. This will prevent you from having the problem he has with bones being able to move in wrong directions after mirror.