Hi lorna,
I just purchased this, and so far I've learned a lot. Being new to Git, my job requires me to do pull requests sometimes to DB scripts and I had to learn quickly in the GitHub documentation. But seeing this tutorials is much better and is helping me to understand how to use Git properly :)
I have one question, I'm kind of new to Linux as well, and recently I installed Xubuntu... how can I make my terminal to look like yours :) with all the colors and stuff (like highlighting in a different color the current folder in the prompt). I noticed my emulation setting is set to XTERM.