Beginner quality of life questions

Some quality of life questions from someone playing for the first time since VF4: Evo:

• Is there any way to reset Shun's drink count in training mode?
• Is there any way to block certain players with bad connections?
• Is there any way to change your screen name?
• Is there a modern wiki or is virtuafighter.com still the go to?
• Is there a respository of character guides (Shun in particular)?
• Is there a main discord that people use these days? Link?

Thanks.