Earnabike and learning bike maintenance?

Has anyone ever volunteered for an Earnabike shop in an effort to learn bike maintenance skills? I guess if you put in ten hours you have the opportunity to build a bike (earn a bike) through your time and donated parts.

Here’s a link to a local shop in Worcester, MA:

http://worcesterearnabike.org

I’m not looking to earn a bike just looking to learn skills necessary to maintain my bikes. Any input would be great.

I have not but if you want tips in a nice concise form then check out the Global Cycling Network on YouTube.

Here’s a link to their maintenance playlist: https://www.youtube.com/playlist?list=PLUdAMlZtaV1333Cy1QnIZwqDXj1q0Ooyy.