Where all the key NPCs are...or at least most of them.
Look for the red circles for where to go...or use the player marker if no circle exists.
Fulgrim; part of the Tutorial Quest...also you can give books to him.
Drax, the guy who sells you furniture for your shelters (Hobo Lair). He is also the only hobo who makes his own fire, which is very handy to keep players from using their own resources to start fires at the Hobo Lair. You should totally hang with him when "The Calamity" comes.
Maisner, most likely the first hobo you meet, he's the one who starts the tutorial.
Master Hobo, teaches you most everything.
Shrug, the clothing vendor, his stock changes (and sometimes has legendary clothes).
Starting loot spot, this gives some free supplies that respawn every so often (and is the area that spawns bed springs for one of the tutorial quests).
Monty, who can teach you crafting skills and how to fix broken electronics for selling.
Mrs. Emka, the seamstress...don't mind the red circle for this one; she's at the player marker, instead.