Ridiculously Simple Guide to Gmail

Email as a communication tool has been used since the 1960s. Commercial use of email is still relatively young.
Today, email is dominated by one company: Google. Estimates show that over 50% of all people with email use Gmail! If you picked up this book, you probably have one or are considering getting one.
For its email service, Gmail is easy enough to use-compose email, send email, done! But there's more to Gmail than sending and receiving email. How do you get not-Spam emails to stop showing up as Spam, for example? What on Earth are labels? And how do you get email forwarded to another inbox?
If you want to be a power user, then read on!