I have a few questions, im hoping someon can answer.

1. Can you upgrade legendaries? I kn ow you can switch stats, similar to WoW, but I thought you could actually improve them. Does this include the items you may get at lower levels? Should I save a nice legendary I get from lvl 50-60 because I can upgrade them later?

2. Is there a way to identify and sort legendaries for a novice, or an addon which can gearscore? I have no idea what legendaries are useful and not.

3. Is there any way to craft 4 items on one character and give them to alts?

4. When does 2.1 come out and what should I do untiul then to prepare?