When describing a complex system, many people resort to diagrams with circles and arrows. Circles and arrows leave one free to describe the interrelationships between things in a way that tables, for example, do not. The system we need is like a diagram of circles and arrows, where circles and arrows can stand for anything.
– Tim Berners-Lee; Information Management: A Proposal; May 1990.
The web is a rich and complex environment; some advanced tips, techniques, and resources that are useful to have in your surfing toolbox are described below: