Take a walk around Runescape on a fresh level 3 (members/f2p)
Do any activity you want then try to automate it, like a goblin killer which burries the bones.
Once you know the basics, it's just down to learning how to use the API.
If you're being serious about it, then yes I guess bitlaunder would work. Any kind of bitcoin tumbler would work.
The idea is to send BTC to multiple addresses so it can't be easily tracked. Using a 3rd party tumbler still deanonymizes you since they know the origin and destination of the btc. If you're that paranoid you will need a constant stream of btc to act as junk data and time to make a tumbler of your own.
You have an address like "13vQBwKCRSHGbBU2PfDi1g89PHZwQWdjb6" You give this to other people and they will be able to send you btc.
Unocoin is an online wallet I think, so you'd just log in there and find the place where you can send your btc.
It's good practise to have a wallet that isn't hosted on a website as websites are prone to getting pwnt