Another Day 4 Issue

Hello, two things for this:

1. Can someone fix the order of .md file to have "Accessing Characters in Strings by Index" **before** "Escape Sequences in Strings"? It's hard when new and trying to follow the results in the terminal.

2. There's no .index example as it mentions at line 136 in the .py file. Line 137 and on uses .find and it's as if it got copied over by that.

Thanks
DaneBotTron... 