Hey I just got the game and I played a few single player games but I'm not making the connection on a few major concepts that I need to be able to fully enjoy the game...

1)  When creating a fleet, how do you appoint a group leader to that fleet?  When I create a fleet its odd bc it always makes some puny frigate the leader when I have a capital ship in there with them.

2) How exactly do you increase the fleet capacity?  I some how just upgrade everything and click on random icons so I am not exactly sure how I do it each game but what am I doing that increases the fleet capacity of my empire.

3) Does everyone elses fingers hurt from using the scroll wheel so much?  Is there anyway to know which freaking planet I am clicking on in my empire tree?  When I have 5 ice planets I can't distinguish between them.  How do you keep your planets straight?

Ok so in #3 I ask more than one question, but if anyone can shed some light on this stuff I would be greatful.