1.) How to get around?
Use the teleport tab panel to teleport around places you need to go, on the teleport panel you will find
Camelot teleport which teleports you to camelot castle close to catherby, there is also al-kharid best used to get scimitars, platelegs and to mine, in my opinion, also you will find a karamja teleport which is useful for killing the jad (fire cape) and to kill tokz creatures to get obby items and tokkul (money for shops in the tokz pit) There are many other teleports on the panel such as Taverly, Canifis and ardougne, and a new portal recently added by james which teleports you to on of the main citys known as varrock.
2.) How to make cash?
In my opinion clue scrolls are the best key in the game to make cash, they reward easy money and can sometimes hold rare items inside them but watch out as you may have to face fearsome npc's such as a lvl 108 saradomin wizard. Also you can teleport to ardougne to thieve your way to money glory as cash and items will build your cash stack up.
3.) Where to start all of my skills?
Fishing - Catherby- which is east to camelot castle holds a fishing place close to a bank so you wont have to run far!
Thieving- Ardougne - which holds many guards which you will see as soon as you teleport
Firemaking/Woodcutting/ - Draynor - this is the closest place to a bank which holds willow trees to woodcut and firemake
Hope this has helped many of you newcomers