You are a bit low level for that area. At this point I see only 3 options:
1) you go back on the island and level up a bit more
2) leave an IGN (in game name) on forum and maybe someone (I can try to help u but I live in europe so there might be some time issues 4:38 am here when i write this message) will give you a hand until u get to level 20
3) you get a run to Kaineng city and move to eye of the north (your attribute and hp will be changed to the ones of a level 20 in Eye of the North, usually the attribute points change is not that usefull but still it's probably better then the one u can have at lvl 11); try to get max armour from Kaineng or Eye of the north (i think the one from the first eye of the north town is a bit cheaper but not 100% sure), get the first 3-4 heroes from eye of the north (gwen is easy to get so make it 4), (i don't remember if moving to nightfall will gave some heroes fast or not so if someone knows confirm this)
Regarding your friend suggestion. If you ask me he is only partialy right, Factions is the fastest as long as you know how to do it fast (without heroes I'm not so sure how fast it is). If you ask me for a new player Vizunah Square quest can be a nightmare (if u don't get an human ally from the other side then...).
I prefer to start all my chars in Nightfall, the reason is cause i get some heroes from the start, then at lvl 10 I move to Eye of the North basicaly to get the 3 or 4 heroes from here (basicaly I stay here 10-15 minutes), then I go back to Nightfall.
I prefer the heroes cause I can use the builds I want on them. Regarding builds for you and for your heroes you can find some builds here:
http://www.gwpvx.com/PvX_wiki