I need Grammar Girl like I need food and water. Thankfully, Professor KP introduced her to me this semester. Grammar Girl, where have you been my whole life? How did I survive without you?
"email" or "e-mail?" Grammar Girl is there for you. Just go to her site and search for whatever help you need. Plus, Ms. Fogarty (a.k.a.: Grammar Girl) not only textually explains the rationales, but many explanations are narrated by Grammar Girl herself.
And by the way, I am walking on eggshells hoping to not make any grammatical mistakes while writing this Tech Tuesday blog post.