I have some q.s.
1. When we have ico token, What do we do with them? How to sell them into money?
It's up to you, but only a recommendation if your token is still new you can hold it for some time. May I know, where you are safe your token, if you hold it in the exchange you can sell it directly and exchange it to BTC or ETH after that you can send it to localexchange and exchange it for money fiat.
2. Few campaigns have their own wallet? How to sell them in to money?
For this question, I really don't understand what you mean, can you clarify it?