Here is some information on CSA's in general and here is a link that helps explain http://www.localharvest.org/csa/ .
This is my chopped down version.
What is a CSA?The basic idea is …each member invests a set amount of money for a number of weeks during a growing season. This amount helps your farmer pay for seeds, plants or whatever else that it takes to grow your fresh vegetables. As a member you receive a box of fresh from the garden vegetables and other products we produce.
In doing searches on the internet I have found that the basic idea is the same for most farms but different require different thing from the share holders. Some farms have work days for the share holders, have box charges and other things. We do not require work days and so far have not needed to have a box charge. We charge $150.00 for 15 weeks, this is one share. Basically a $10 box of fresh vegetables a week. I suggest for first timers and couples to do 1 share unless you have a large family. I have had 2 customers go to 2 shares this year. You can also add 1 doz. eggs to your weekly order for 37.50. Yes, we have chickens.
2011 Spring Box
If you are interested in the CSA or our weekly e-mail, send me an e-mail at firstname.lastname@example.org and let me know or if you just have questions.