I was looking at various messages about making purses when I accidentally came across a video (online) which showed how to create triangles and diamonds the easy way.
The lady doing the demo sewed squares together first (maybe four of darks and four of lights) and then put them facing each other to sew them to each other. Then she proceeded to cut the sewn squares across in a diagonal to create half square triangles that she could then join in a totally new block.
Please help me to find that tutorial again. IF I knew the title, it surely would be easier to find. Sorry!