What are the methods of collection of BTC easily
There is an easy method of using faucets etc but you will earn equivalent to the work you have put in. Not much. As with real money /fiat/ there is no easy sure fire way to collect btc easily. You will need to work for it either offering a service or your skills and that is the only method you will need to collect btc.
another way that was not mentioned is that you can farm and sell account easily, don't go for high rank account, try to sell mass of member of full member, they are much easy to get, and they can be worth 0.05 easily
After seeing the prices of accounts recently I would say that it isn't as easy as you may think. How long to rank an account to be able to sell for 0.05btc. To long and not easy to post that much without getting banned for spamming..