Where can I learn how to care for my CL Don Juan climbing rose bush?

I have wanted a rose bush so my friend got me one. I've been looking on the internet trying to find how to care for it (its a Don Juan) and having some trouble. I would like if you could recommend a couple websites to try. I'm a little worried because what I've found is that they are sort of difficult to care for. I need to know how to support it, protect it from winter, how to plant it so it's well drained, and other basic information. I have never had a rose bush so I want to succeed with this one. Also I need to know if there is a good video you can recommend about how to prune roses.