Interesting point Martin.
I love a good expert's book, but with the broad onterest I have it would not only be prohibitively expensive to do my research/checks via books, it will also require a lot of weight on a lot of shelves, something which I try to avoid more and more after having moved house a couple of times. It seems that the better the book, the heavier it is!
And then, even with good books, I often run into questions that the book cannot answer. Like 'how does the INSIDE of the hat look?".
So in practice I use the net more and more and more. Yes, the average quality of the information is reduced, but the volume of accessible info is so much greater that I usually find what I am looking for. Of course one needs to be critical and double check information, but books definitely are not without fault as was pointed out already.
Another major advantage of the net in my opinion, are discussion forums, such as PF. On a forum you can ask a targeted question, and in many cases the question will be answered in a couple of days. This interaction is a unique advantage of the net that I enjoy a lot.
Because of my fondness of digital searches, I now have a growing collection of reference images (that I can also use to answer someone else's questions on forums).
So, given the limited set of option, I went for option 1.
Cheers,
Adrian