Whenever the value of a fundamental constant or the property of some material is needed, these are provided by our government through the National Institute of Standards and Technology.
The science bibliographer in the Z Smith Reynolds Library, Ms Sarah Jeong, has constructed a Physics Research Guide. It gives guidance for finding physics information in our library resources.
Our textbook has a web site.
Here's an interesting article about the Michelson-Morley experiment.
Tipler's Fig 1-29 shows how objects appear distorted when the combined effects of length contraction and delay due to the finite speed of light are taken into account. Here is a web site with movies illustrating these effects.