After the Dragonborn completes The Throat of the World quest, a courier arrives with a message from Nurelion's apprentice, Quintus, telling you to go talk to him. After that he tells you the necessary ingredients for repairing the phial.
Recovering these ingredients, Quintus successfully reconstructs the phial.
Source: The Elder Scrolls Wiki page "The White Phial (Item)"
There are no common English words that start with "pH" and end with "pH."
Any that suits your playstyle.
No.
by repairing onto it
There's nothing to join, you just buy the game and start playing.
If you mean playing it then yes, if not, then it's up to you.
There are no fixed locations, they just start appearing when you are at a high level.
You have to complete main quest: dragon rising
You need to be Lv20 to start the 'Pieces of the Past' quest.
I would advise that you start off as a dragon. The dragon has the best perks.
If you want to start repairing laptops you can take a single course that will help you start right away with your repairs. There are a lot of on-line classes available to take. For more information go to http://www.beyourownit.com/
Lower the difficulty?... I'm not sure I understand what you mean?