I used beeswax when I embroidered some blocks for a guild Christmas Quilt, and it didn't on that. I have heard it stains fabrics, but never have seen it on work others have done who said it, and not on mind. I think it is a good product.
Have the scotch tape handy for paper-piecing. A friend helped me paper-piece the "Amish Tulips" into a wallhanging, and that was her first piece of advice!
I agree; it is easy to loose your place if you don't stay with it!
Marta