Help! I don't quite understand...

...Ruby

If you're having trouble with Ruby, you might find the official Ruby quickstart tutorial helpful. It walks you through basic syntax, methods, string interpolation, classes, looping, blocks, and duck typing.

You can also try going through the Try Ruby interactive tutorial again, this time making sure you understand everything that you're doing before moving on.

...Git

If the Try Git tutorial didn't make sense to you, the Git Basics Video Series might be a good place to go for some additional help.

...Sinatra

Read the Readme.