Phylactery Factory was created in 2007-02.

Usually the tefillin shel yad or the phylactery for the arm, goes on the left hand. For a left-handed person, it can go on the right or left hand depending on local custom. The tefillin shel rosh or the phylactery for the head rests on the forehead and is not tied to either arm.

First off, you must have the "craft wonderous item" feat. This allows you to create what is called a phylactery. You must be an 11th level sorcerer, wizard, or cleric. And finally, the phylactery costs 120,000gp and 4,800xp in order to create it (nothing states how long this takes to make, but using the "creating magic items" rules in the DMG my guess would be 120 days).

For some more rules on how a lich works and what you need to do to become one, look in the monster manual under the templates section. The most important part is making your phylactery.

Yes, he was a lich; he was taught the dark arts of necromancy by a fellow lich - none other than Elizabeth Taylor. He underwent the Ritual of Endless Night sometime between making "Thriller" and "Bad". You are correct that the glove was/is his phylactery. He now possesses the body of some Chinese lady in Hong Kong.

'Arcane Warrior' specialisation is unlocked in the Elven Ruins in the Brecilian forest. You will find a phylactery (different to the Black Vial ones) in a room with a blood altar. Speaking to the spirit in the gem will have it offer the specialisation in exchange for its freedom.