Want to start Judo but...?

As with all martial arts judo is no different, you will start with learning some fundamentals. No one will expect you to know anything or to be very flexible. You will learn as you continue to train. You will gain more flexibility as you train. If you work on your technique and attempt to do what is taught in your class there should be no problem with advancing in rank (belt color) as you learn. Keep in mind that the color of your belt should not be the focus. Increase in knowledge and applications of the techniques should be your focus.