It sounds like a really fun beginning project! Cut the pages as square as possible. Choose border fabric and corner fabric (usually referred to as cornerstones). Start with either the top and bottom or sides. Make the border and cornerstone strips slightly wider than the size you want the finished blocks. If the pages aren't perfectly square or exactly the same size the borders will compensate for it. Measure the edge of the block you wil be stitching to and cut your strip the same length. Sew top and bottom or sides onto the page. Add Cornerstone pieces to remaining cut strips and sew them on the other sides. When you are all done you can trim the blocks to a consistent size. Seams may be pressed open or pressed oppposite directions so they fit together. Clear as mud? Look around at some of the free patterns and that may help.