I had 4 GB RAM in a 5 year-old Macbook Pro and it was so slow. Swapping this RAM made all the difference and will likely extend the lifetime of my machine by a couple of years. A good investment - but check your machine's compatability and remember to earth yourself before opening the machine.
I needed something to protect the wood on top of my upright piano - this does the trick. You do need to take note that the pattern is not neutral; is very striking/dominant, so be careful that the colour of the surrounding walls/furniture can blend in with this. In retrospect I would have preferred a more subtle, even bland colour/pattern - this is quite anachronistic.
Am 60% through the book so far and am finding it full of useful information. The writing style is clear; the examples illuminating and the explanations succinct and to the point. My only regret is that I wish I had read this a few years ago.