FIRST and BEST Robotics are coming up this Fall. If you want to get involved with robotics mentoring , I highly suggest checking out http://mentorsearch.us , Usually you want to start helping the team when school starts but you can also start later.
The site will show which robot events are located in different areas and also provide training so you can become a great robotics mentor.
If you register , you can connect to other robotics teams that need help.