I'm really proud of myself right now for figuring out how to install the latest murrine engine in Linux Mint Debian Edition (LMDE), which I'm running on my home desktop.
My previous Linux experience has been almost entirely with Ubuntu-based distros (including the standard version of Mint). In those distros, you don't have to figure out what to do with Debian packages (.deb files). You have a Debian package installer (or in Ubuntu 10.10 the standard Software Center) that does all the work for you. However, in Debian and LMDE, you usually have to do some stuff in the terminal to install from a .deb.
After 3-4 tries, I finally managed to get the dance of ./configure, make, and make install right. It took me forever to figure out that I needed to be logged in as root for the make install command to work. The single hardest part of working with the terminal is picking through the line after line of feedback the program gives you to try to figure out what went wrong. I don't know how many times I've been frustrated by things not working because I typed in the next command without noticing the error message immediately above the prompt.
Anyway, I want to show off after this quantum leap in my Linux skills. Here's a screenshot of the Ambiance Mint theme, complete with correct murrine engine and Faenza Mint icons.