Give the GUI some time. You'll get used to it. Even though I've been exclusively Mac at home for about 14 years now, there are still a few things I miss from PC's (home and end keys, shift+delete, etc..), but in the end very little.

I have both a recent Lenovo ThinkPad and a recent HP ProBook for work and I find the 7 year old Mac more usable than either of them.