In starting your rank will be Brand new after 1st post it become Newbie and after 30 activity you came to post it on of jr manager and after that you can add signature. For more details please visit this link https://bitcointalksearch.org/topic/m.28856522
Well, there is a small change in that, henceforth you need 30 Activity with 1 Merit to get Jr. Member rank..
How can I get merit points?
Quality Topic / Post will lead you to a Merit, if that post is noticed by one of the Senior Member who holds a sMerit with them..
Just 1 post may not create a surprise out of the box..
Just post something better and may-be something unique & have some patience, if it didn't work, try again with a much better post and wait again.. with time it will work and one surprising day you will find a Merit in your profile for sure..