You can join in anytime you want, we have several who have just started. Some have started on week 25 and these go really quickly as they are slightly easier to start with. You can work backward then and still be in the frame so to speak.
There is a Schedule of how many blocks to make per week On the original thread called Dear Jane Cyber Sew page 180 is the correct schedule (first had a couple of glitches) average its 4 or 5 blocks and we have a week off every 6 weeks so you can do catch up then as well.
We currently have posted week 30 but donīt let that put you off as some of us are over achieving on this one.
There are over 200 blocks and the finished size is 4 1/2" so you make a 5" block. Best plan is to buy the CD as all the blocks, sizes, different arrangement of blocks are there. Hope that helps
Sorry Lesley I answered for you as you are not around yet.
Elle