Joanne Gonzalez 
Learn to Waterfall Crochet [EPUB ebook] 

Welcome to Waterfall crochet, a method that introduces a way to get the look of multiple mid-row color changes without all the hassle. No more carrying the dropped color across the row, and no more mid-row color changes. This newtechnique uses chain spaces to form a lattice to work over. Colors are worked the entire row and color changes are only done at the end of rows. For most projects, yarn is carried up the side and worked over when making the border.