If its your first time trying Crossfit i highly recommend Auxiliary Crossfit. This is a "no pressure" box where athletes of all levels can come and train. Every single workout can be scaled accordingly, the coaches keep the class size to a managable size so everyone gets attention. Their box has ample enough space for everyone, and free parking is available, also it is a short walk from the subway. Open 7 days a week with various class times and open gym time.