Make Your Own Circular Slide Rule - http://solar.physics.montana.edu/kankel/math/csr.html Templates, directions, and some links to other slide rule sites.
Internet Slide Rule - http://www.sagmilling.com/sliderule/ Internet port of history's most heavily used advanced calculation aid.
Edwin Thacher's 1881 Slide Rule Patent - http://www.americanartifacts.com/smma/thachpat.htm Specification forming part of Letters Patent No. 249117, dated November 1, 1881. Includes diagrams.
History of the Slide Rule - http://www.hpmuseum.org/sliderul.htm Basic facts involving the development of the slide rule. Includes diagrams and links to information on various types of slide rules.
Basic Slide Rule Instructions - http://www.hpmuseum.org/srinst.htm Explains how to multiply, find cube and square roots and other operations. Includes illustrations.
Napier's Bones - http://www.mwbrooks.com/bones.html A story about the use of a 6-inch Pickett "all-metal" slide rule (Model N 200-ES), with case.
How to Use a Slide Rule as a Bicycle Gear Chart - http://www.math.uwaterloo.ca/~arpepper/Cycling/slide_rule.html Slide rules are useful for doing gear calculations. Briefly describes a method for doing so.
About Slide Rules - http://www.caffnib.co.uk/slides.htm Explains how to use the different scales to multiply and divide.