Earning merit is just given by people who have Smerits or for short, the high rank people. They tend to give you merit if your post is fruitful to them. Just a piece of advise, high ranking people or most people here in bitcointalk don’t want redundant questions. I suggest this kind of general questions should be searched and not posted to threads. You already have 40+ activities, by now if you’re reading and learning about bitcointalk, you should already have knowledge. Unless this is not your account or this is just another “post anything to rank” posts. Be careful man.