Personally, I found the skill system for GW to be great. I love the idea of builds that you can change almost anytime.

I spent ages reading up on various skills and trying to create the "best" build I could.

Then I found this site:

http://pvx.wikia.com/

And I started hunting down skills + elite skills I didn't have.

It was very satisfying when you make it to hard-to-reach places, find some unique monster that doesn't spawn there all the time, defeat it, and capture it's elite skill.

Good times, good times.

Not to sound harsh, but I never had issue with points 1 & 2. Reading the two wikis helps (the unofficial was around before the official, content is similar but sometimes one is better than the other, so I use both):

http://wiki.guildwars.com/

http://guildwars.wikia.com/