No, it's not bad to shower every day. You shouldn't wash your hair every day, though. You can blow dry it, but don't do it on high level, and don't flat iron your hair often. Natural oil is good and heat is bad.
no, taking a shower every morning is what 99% of people do. they also wash their hair at that time. they use a shampoo made to be used daily.even if you think you have oily hair, use conditioner made for oily hair that is shampooed daily. but, be sure to rinse your hair very, very well.