One important thing that you can find on the Web is inexpensive
software available for free, or available for a trial before
you purchase it. Here are three places to start looking
for freeware and shareware on the Web.
Making links to things that you find on the Web
usually is permitted without concern about copyright issues.
However, if you download and save things that you
find on the Web - particularly if you incorporate those
things into your own material - you need to be concerned
about issues of ownership and copyright.