If you wanted to earn btc here in the forum then I can suggest you to grow your account first at least member i rank and apply for signature campaign that pays BTC. There are many open slots this past few weeks and there lot of vacant to apply. However, the offer may or may not good depending on you and your place where you live. If you can receive 10-20$ and that amount you think is already good for you then take my advise and try to contribute helpful post to earn merits but do not ask for it or expect someone will give you merits readily. It has to be useful and that contribute and could make impact for the forum and to the members itself.
BTW, this is the link or section of the forum I am wanting you to check,
ServicesOverview of bitcointalk Signature-Ad campaigns This thread is actife and always been updated by the OP. Anyway hope this help you!