In the past few months I haven't logged into 07 outside of for completing rwt trades (hue) but anyhoo...
1. There's tons of 50-100k+/hr methods spinning flax, refining iron ore with an enchanted ruby ring, slaying unicows, & runecrafting are the first things to mind but there's a ton of other methods if you put some time into researching methods.
2. Any decent method (that you personally can expect to find & is viable for goldfarming) will require atleast some sort of training
3. ??????
4. Look it up & test it out (don't have an account? --> make some friends)
& dw every1 knows @
KeepBotting; is the biggest goldfarmer, he gets rune bars like they're cabbages