Step one: Interest, Congrats you want to get more involved, you have your reasons regardless of what they are, we are happy for the interest.
Step two: You can either contact one of the board members about volunteer opportunities (events, assisting board members etc.) or wait for the yearly survey and select a position you may be interested in.
Step three: A board member will contact you to set up an in-depth call to start the vetting process and find a good spot for you.
Step four: Depending on whether you would like to run for a position or volunteer in some other way. The next step is to give the election committee a small bio and wait for the General Meeting/Election that is held every year in June.
Have any more questions: email firstname.lastname@example.org.