A Nine-Patch consists of blocks, each three squares wide and three squares tall = nine patches in one block. There are several websites with pictures and details.
A nine patch quilt consists of blocks with nine pieces of fabric in each block for the quilt pattern. Each block can be identical or each block can be different.
Depending on the desired size of your quilt, you'll need to make rows of blocks with nine patches each. The blocks can be completely different, the same, or a pattern.