I'm a beginner when it comes to sewing (a couple weeks), and I have questions about bias tape and working with knits/stretchy fabric.
First, I keep reading about bias tape, and I understand that it's when you cut fabric 45 degree diagonally.. but what is the big deal about it? Maybe I'm not understanding what it is, so what does it do, why is it specific to 45 degrees, how is it different? At first, I thought bias tape was just another word for ribbon, but I've figured out that they are not interchangeable..why?
Second, I have a sewing book for beginners, and the author suggests staying away from knits. Is it because they're stretchy? I've already attempted at working with them (I just figured out what exactly a knit is, so it wasn't on purpose ). Are you supposed to stretch out stretchy fabrics when working with them?