Ladysuds, BOM begins in January & ends in December. Each month participants view the BOM forum icon fo ir that month & get the Instructions for that block which usually includes a site link where to find templates & what the block layout is. You choose your colors for your quilt which can be scrappy or monochromatic (matching colors but different fabric) and make your block. If you find it difficult, the month's host can help as well as other participants. When you finish your block please post it on the Month's Picture thread so others can ooooh & ahhhh over it! After the 12 months you can make a quilt & post a pic of your finished quilt. BOM is a slow process giving you plenty of time to make your block. I hope this helps!
D J