Look at the top right of any post you like and you will see +Merit , press it and you will be directed to another page where you can give Merit , enter the amount of Merit you want to give and press send .
This is not very helpful. The OP doesn't hasn't earned any merit, therefore they don't have any to give. You've just left this guy more confused.
To the OP...why should we help you? Is it just because you ask for help? Or do we get someting in exchange?
Don't mind the snarky talk but literally 5 times each day someone like you posts the exact same question on this forum board - "umm, what is merit?" "umm, how do I get merit?" "umm, someone please do everything for me because I'm incapable of doing my own research?"
If you're familiar with this search engine site called Google you could type "What is Merit? + Bitcointalk forum" and get sever listings that provide you the answer. Did you try this? Next time try this first.