I am knitting my first real garment and I'm to the point where I need to start another skein. When I was doing scarves and blankets I started at the end and made a knot, but I've heard that you shouldn't make knots (which makes sense). In SnB it says to just hold the new yarn with the old yarn to start the new skein, and then later weave the ends in, but wouldn't the finished product maybe pull apart?? :?? This may be a really naive question, I just don't want the first top I make to turn out weird because I didn't know what I was doing... Help is much appreciated! Thanks in advance!