I just rank up today at 70 activity but still I'm a Junior member because my merits are not enough, so I feel so sad..because honestly I'm having hard time earning it.
You have not even completed two months on this forum, then why are you crying ?
I don't have much knowledge in bitcoin though I research but not all sink in my mind
You should spend more time on this forum; there are many threads which has answered the questions asked by the newbies. Go through these threads, it will increase your knowledge and will clear your doubts.
its really hard for me to earn merit.. Is there any other way to earn merit except for quality posts?
Your focus shouldn't be on earning the merit. Share your thoughts, start participating in constructive discussions and make quality posts. By the time, you will get the merits