send your CV to as many secretarial / admin / office recruitment agencies as possible
Update your terminology: you now have keyboard skills and are computer literate ('typist' went out with the ark!).
Then look at sites like peopleperhour.com, elancer etc.
Do you have any idea just how many, many, many people want to work from home typing away on their keyboards for some money? The answer is millions ranging from old aged pensioners to housewives to Uni graduates who can't find a job.
So the answer to your question is don't bother advertising for free anywhere, nobody wants a typist who works from home, they can easily find someone on minimum wage to come to their office to do any typing.
Plenty.
Try sites like Elance.
I'm wanting to work from home if possible and am a qualified typist/ administrator - I wondered if there were any sites or free ways of advertising for people looking for typists ect . Uk only . Any tips ?