Courtesy of Skunk Mag:
Hang plant and dry as normal, take seeds out of buds and lay on large plate and sit out in a warm dry place and out in the sunshine is all fine.
After a few days like this they are ready to package up.
Packaging must be light,air tight. U could throw in some Basmati (uncooked) rice to suck up moisture. Keep in fridge good for 5-10 years at close to 100%.