Reference tables
Four tables and one explanation, kept apart from the patterns so a tab left open on them stays useful.
How to read a crochet pattern is the page to start on if a repeat written from a star is still doing your head in.
Why these four and no others
They are the things a pattern assumes you already know and never explains: which hook the letter on the handle means, what weight the ball band is claiming, which side of the Atlantic wrote the instruction, and what the short forms stand for. Every row is counted on this page, so you can see the size of each before you open it.