I include affiliate links throughout Pilot Math Treasure Bath, and here on this site. My promise to you is that I’ll never present you a link that earns me money for something I don’t use or believe in. Running a website is far from free. While I hope that my book earns some money, it was pretty expensive just to bring it to market. If you benefit from my work, I hope you’ll help support me when you can.

Here is (the start of) a consolidated list of some of the affiliate links I use: use Square to accept payments when I’m out showing people my book. It’s easy to use and the fees seem reasonable. is the most common accounting software for small business. If you click on this referral link, I’ll get some money and you should get a discount. Fi is the best mobile phone provider I’ve ever worked with. I highly recommend them.’m a big fan of Airbnb. It’s a great way to save money and get closer to the area you want to explore. If you use this referral code you’ll get up to $55 off your first booking, and I’ll get a kick-back too.