This book has got some great patterns for the basic balls having knitted more than a dozen so far I have not found a bad pattern. All the patterns are charted not written out so for me that is good there is even a blank chart at the back for your own charts. Any Shetland pattern of 16sts will fit. The patterns are written for DK wool but they work fine in 4ply if 2.5mm needles are used. I will certainly add to my stash of balls next year.