Guild Wars 2

Hello!
I do not quite understand how the sigils work and how to choose them, so please help me with this problem. It seems to me that I am much-much weaker than all the other players, and someone told me that it’s all about sigils.
So, I need to equip my Reaper, Daredevil and Chronomancer.
I will be happy with every advice.

Sorry for my not perfect english and thank you!

Hello!
The answer to this question is pretty obvious but I want to make sure that there is no loophole.
When I just started playing I had no idea that I can use TP to get money, so how you can understand from that – I didn’t know alot of things. GW2 is my first game that actually interested me. I didn’t play nothing else but GW2 so it was difficult to know even a little at very start.
I deleted a lot of important items in the past that are hard to get again, and I’m terribly sorry for that. And only just now I know enough to not make such silly mistakes again.
Is there or will there ever be a garbage basket in the game?
When I think about it, I start to get very upset so any comforting is very welcome :D

Sorry for my not perfect english and thank you!