What to do after mining, if i withdraw it what to do next?? Kindly help me, im a little bit confused.
Your question is too cryptic!
But with my understanding you want to ask whether to withdraw them into fiat or whether to convert it into bitcoin if you are mining altcoins or vice versa. I'm also thinking that you are asking whether to hold them for long period so as to get interest on it as the price keeps increasing.
To answer specifically, I would suggest you to tell us what coin are you mining. If you are mining the bitcoin then you can hold it into wallet with private keys and grab the profits over the time when it increases in the price. Other option is simply convert it to fiat money and withdraw to bank and use it.
If you are mining altcoins then go for converting them into bitcoin and then you can repeat the above steps obviously. Everything is upto you and these are all possible answers to your ambiguous question.