Here is a perfect example of a spring preservation run. Set this topic to “watching” at the very bottom of the comments. You will be notified when doug posts updates on his run or other people comment. Next steps is to get involved, check out the pics, comment on stuff 
. From there you will be around when doug is ready to post a sign up sheet for the preservation seeds for the spring box. If you need help signing up see the link below. Next steps you wait till spring, doug (if you’re in Canada) will contact you, pay for shipping and your beans will arrive! It’s an awesome system put together by the most awesome people! 
There are a few great write ups on how the spring/fall boxes work - How does the Co-op Boxes work - #4 by G-paS
https://overgrow.com/t/how-do-i-sign-up-for-a-co-op-seed-run/83615/13
Edit - one more link - How do I know what Trust Level I am? - #10 by GrouchyOldMan
https://overgrow.com/t/bog-sweet-and-sour-cindy-preservation-co-op-run/122842/290