I bought a copy of RS Italy 2017. But why I couldn't find the "Rialto to Frari Church Walk" in the Venice section in the book as Rick mentioned in his website? Did I miss it somewhere?
It's not in the Italy book. But it is in the Venice book.
Before your trip, be sure to download the free "Rick Steves audio" app onto your smartphone, and then download the "Venice - Frari Church" walk (tour selection?) onto your app playlist. Great descriptions of the church and various tombs and pieces of art in the church. There are some other great Venice walks/tours on the app, too. All free!