If you haven't jumped on the ebook train, you may be missing out. My book, My Wine Guide (made simple), just came out in a $9.95 Kindle edition, which means you can carry it anywhere you take your kindle, iPad or smart phone.
Wouldn't it be great to discreetly look up the sommelier's confusing language, like you were just checking a text? Not that you would use your phone at the dinner table, but ...
If you are into good ol' fashion books, grab a copy of the paperback edition for your light daytime reading, too.