A list of useful guided/tips/whatnot which will improve your knowledge of the game.
Feel free to reply with your own guides/tips and tricks.
Guide to Maxing stats and acquiring Ascended gear (https://www.youtube.com/watch?v=nINqZPeSJ7k&index=4&list=PLJ4LEdLwyhztw5I3RlwvDpZ91wkh4RnGt)
Builds META (http://metabattle.com/)
GW2 Wiki - Some items might be outdated (http://wiki.guildwars2.com/)
Reddit new player guide (https://www.reddit.com/r/Guildwars2/wiki/newplayers)