The first step is to find the studs in the wall so that you can attach the fan bracket. Once you have found the studs, use a level to make sure the bracket is straight before drilling screws into the studs. After the bracket is secured, affix the fan to the bracket and connect it to the electrical outlet. Finally, use caulk around any openings where moisture could enter and then paint over the caulk.

There is no one-size-fits-all answer to this question, as the method of installation may vary depending on the type of fan you are using. However, in general, you will need to access the attic space above your bathroom and install the fan venting through the roof. Before beginning the installation process, be sure to read the manufacturer's instructions carefully. In addition, it is always a good idea to consult with a professional before attempting any home repairs or renovations yourself. Good luck!