I have some q.s.
1. When we have ico token, What do we do with them? How to sell them into money?
Well after receiving tokens from bounty I shouldn't sell it immediately, it is good to study market price movement before sell token. Am usually I'll depend on the tokens ability it does have a good potential to reach moon and it is the perfect time to sell my tokens.
2. Few campaigns have their own wallet? How to sell them in to money?
Yes it is actually a normal for some ICO to make their own wallet on their own website. It is because they can be easily distribute all tokens to all bounty participants and all investors. And sometimes a KYC is needed to do when you are creating acc om their website to prevent being scam and at the same time to avoid fraudulent people's activities.