Anyone can guide me in this?
Easy no worries mate , you can simply post here on the Currency Exchange subforum like you did saying how much Payoneer $ you have an how much
BTC you are looking for and wait for someone who want to trade with you .
Or since Payoneer is a MasterCard you can buy from exchangers website directly , you can read more on bitcoin wiki :
https://en.bitcoin.it/wiki/How_To_Buy_Bitcoins_With_Your_Credit_Card (read the warning and be careful) the Only websites that I know on that list are CEX.IO and Virwox and they are legit as far as I know . Good luck
~ Madness