Lving fast

I hear people saying they got to lv 20 in a day!
How do they do that?
I am on like 6 hours a day for 3 weeks and i got a lv 7 :S
I would really like to know how to lv fast and with what build?

Sounds like your either still in pre-searing, or your not doing quests like you should be. Either do the mission to get out of pre or do some quests to get exp.

I spent 2 hours in pre-sear, did not do a single quest, and got to level 8. Doing the quests got me to around 10, and then fighting Charr got to 11. All that took me around 4 hours total.

But what do you kill then? and with what character? cause im puzzled how you guys do that.

I used a Elementalist and just went around killing everything I found. I got all the armor, explored every inch of the map, and got around 10 dyes and 2k gold. Just explore and kill. Then I did the quests, and became and Elementalist/Mesmer.

The next day I deleted it and made an elementalist/monk, which I only got to level 8 in pre-sear.