I wouldnt wear them all night, even if they say you can. It helps to give your eyes a break, because they get more oxygen that way.
It depends what kind of solution you have. Most are pretty simple, you take your contacts off, rinse with some solution and rub them on the palm of your hand. Many solutions say you dont need to rub contacts, but I spoke with a representative for one of the major solution companies and she said its always a good idea to rub contacts. It helps to get rid of protein buildup.
Store them in the same solution and rinse them again before putting them on again, and thats it!