
Northern red circle is the Rebel camp, an alliance camp with a few quest givers, a few vendors and a flightpath. No guards(!). Its on the side of the road right when you enter Stranglethorn from Duskwood.
There is no inn there.
The Yellow circle is the expedition camp, a camp with neutral questgivers (for both factions) but with no guards or anything else.
The blue circle is a medium sized Horde camp with an inn, a flightpath, a zeppelin tower, guards, walls, questgivers, vendors and what not.
Southern circle is booty bay, a neutral town somewhat guarded by goblin guards. Booty bay holds an inn, a flightpath for both factions, vendors, questgivers, a neutral auction house which both horde and alliance share, a bank, and a boat to Ratchet in the Barrens.
Level 30 is a bit low to enter STV, you might want to consider waiting untill you are 33, 34ish; especially if you play on a pvp server, the ganking in STV is immense. If you do play on a pvp server prepare to get burned down hardcore.
