The beginning of the year is the best time to get the new edition of a few of my favorite guide/resource books.
The American Casino Guide has information about casinos across the United States as well as guidance on how to play many casino games. The big draw for this guide, though, is the coupon section.
At the beginning of January, I was able to turn The D $25 Matchplay and Push Your Bet on 22 into a $50 profit, more than covering the price of the book.
Those coupons are also the reason many people like myself buy the book year after year. Here is the 2019 coupon list.
Eating Las Vegas is another handy resource. The in-depth reviews and commentary are for higher end restaurants, but it has info on more accessible restaurants, too. They also include some good tips for having the best dining experience whether you are dining solo or with a group.
Most of the reviews are Strip-based, but there are local options, too.