I will contend that certain things are difficult depending upon age.<p>That frosty drink is well-neigh impossible unless it is a private affair. It is almost as impossible when you look 15. Age is sometimes important when attempting to get the attention of your peers.<p>Other than that, it's pretty spot-on, and other than the mentor/GSoC items, that was exactly how I got involved in open source.<p>EDIT: I will qualify the age issue. If you are 18/19 and you are attending a conference where the median age is 26 and the everyone there is 22 or older, you will find it awkward to say hi. I experienced this at my first CakeFest in Germany, and was lucky enough that a few random developers took me in as part of their social group.