Forum:Weapons - keep or sell?

When I played through the game with my first character I would sell weapons as soon as I got better ones. Once I hit level 30 and tried to re-run alerts I found myself weaponless. After much frustration I found out I had sold off the weapons needed for PvE and I can't figure out how to get better ones. My stats are low (I didn't do my research so I just raced through without building anything up) so I may just start over with the character. The point of all of this, at what point do you stop trading in weapons and keep them to use once you hit level 30? Hard to run raids and alerts with crappy weapons! Thanks for any help, sorry for being long winded!

Lyceum