
XP-focused Mining, Fishing and Woodcutting. Resources are dropped, not banked.

Run a course lap after lap, and move up when your level allows.
Laps, tickets and marks, for as long as you leave it. It runs the course you are standing at, or takes you to one you choose, and keeps going -- picking itself up after the failures that drop you off rather than stalling at an obstacle.
Gnome Stronghold, Barbarian Outpost, Ape Atoll and the Wilderness course.
No. You pick the course. There is no automatic progression between them.
Experience, or trading with other players. Which course you run changes how many you see.
It is the Wilderness, so no course there is safe. It has configurable threat handling and recovers on its own, but it is higher risk for higher reward and you should expect to lose things occasionally.
No. It runs until you stop it.

XP-focused Mining, Fishing and Woodcutting. Resources are dropped, not banked.

Fight chosen monsters unattended, eating, praying and looting as it goes.