Often see some bounty post, how can I do to get free and have the potential coins, for example, in the bittalkcoin this forum on their product post, what is the request for my account? Activity quantity
Well for starts you need to be a Jr. Member and higher to be able to earn coins here in bitcointalks and there are many other sites that you can earn them. First you can join on campaign signatures most of them accepts Jr. Members and higher but some are more higher so you need to check their rules before you join them. Second, you can earn in faucets or in bits this is really just a waste of time but if you have a lots of time you can still earn by doing it but it takes time. Third, you can just watch videos, do surveys, and other stuffs that you can do all you need is just to check in this website you can register and use this referral = "http://www.bitcoinget.com/?r=3CYdtYEEkAFKYtomiJ5aBvTV4Zg1ETZdhD". Other way is that you can do mining if you have a high graphics card or if you have a mining rig. This is more complicated but you can search some forums on how you can mine coins. Hope this helps.
Good luck due 
. If still newbie, you can go to raiblocks and faucet it
