Quossom, we are all invested in you having a good time with this! Don't give into the despair just yet.
If your fabrics/stash allows, consider the squares technique if you haven't cut into strips yet. I don't keep skinny strips so it works better for me to do the square method, especially with as many little bits of fabric I am trying to use up. I think for someone with fewer fabrics to work with that maybe the strip piecing is a lot more efficient, but I am able to keep my sets together pretty well. I use the little binder clips to tell groups of pieces apart. Is easier (especially with my vision issues)
I think with Bonnie's ruler, it snubs the points off the triangles for better piecing. My first round of sewing is the two triangles, as Bonnie directs, start with the right angle at the top and sew down the piece, I don't pin this step. I am cutting slightly large, but as I've found out with my new machine foot, the piecing is coming out pretty nicely/accurately. My second round in putting together the triangles and I do pin. I also snub the top before sewing to make it easier. You will notice that although I pin, they are well below the stitching line. The clips are also out of the way, they mark each set using both pieces of pink (which for me is white...).