The gymnasium in North America varies in form, size, price, and sophistications. From a customer point of view, hence, spend some time learning about the various gyms near your town/city, its facilities, working hours, overall atmosphere, and work culture, before making the final call. The location of a particular gym is also important. Ideally, it must be as close as possible to your home or workplace. Finally, make it a point to verify the credentials of its instructors. An expert fitness instructor is indispensable especially if you are a fresher in the gym.
Detailed info about gyms in North America can be obtained from the web. You could ask existing gym-goers as well for input. End of the day, it is the right choice that matters! Given below are few resources which might be useful for you.