I've also found that reading too far ahead in any pattern can be confusing. I liken it to reading all the directions on how to assemble a bicycle and worrying that you don't know how to attach flange B to slot A. You're not at that point yet.
Work it one row at a time without getting ahead of yourself. As you complete each section, the directions for the next section will make so much more sense once you have the foundation ready for them.
Dive in! What's the worse that could happen? If you get to a spot that you just don't get, then come here and ask!