My grammar is horrible. I know what sounds right and what doesn't, but I don't really know the grammar rules. And highschool English is absolutely no help. 1. Yesterday, Mary (goes, went) to school. 2. Later, Joshua (will eat, has eaten) spinach. That's a sample of our English grammar section. Totally pointless. So I thought I would teach myself a bit more about grammar and punctuation. Any suggestions on what books to order? My Writing Bible suggested An American Rhetoric by William Whyte Watt, but I'm not sure. It's expensive, and a little voice in my head says I'm not smart enough for it.