So far, I have learned these things about tiling shower walls:
1. Plan ahead and order your tile early to prevent driving around to FOUR Home
Depots to get all the tile you need.
2. Allow more time than you think you'll need for prep work.
3. Don't forget to measure ALL the walls, even the half walls, unless you want
to drive 47 miles back to the only Home Depot remaining that still has
some of your tiles.
4. Try to do all this on a day when your four month old is not teething and
refusing to nap and crying when anyone but his mom holds him. (poor baby)