For those who don't know: biscotti are twice-baked cookies. You make the dough, form it into two logs, and bake the first time. They come out like a soft cookie. Then, you cut the logs into strips and lay the strips on a cookie sheet cut side up and bake them again. The end result is a crunchy cookie. Also, if your dough looks crumbly like this:
don't worry. I think that's how it's supposed to look since I put a handful of dough in my fist and got this:
It's almost like Play-doh. Kneading it in step 3 will help bring it together too.