Useful for all kinds of applications, including drawing graphs (logaritmic and linear, schematics, etc), you don't have to chase down esoteric forms of graph paper. There is a site on the web that offers many styles of free, printable graph paper perfect for homework, tests, sketches, craft projects and more. Print on regular paper, card stock, transparency film, adhesive paper, waterproof paper, or other specialty papers. Graph paper is optimized for printing on letter and A4 sized paper and is available in .pdf format. You will need Adobe Acrobat to read .pdf files or you can use Adobe Reader for free.
I find that my printer does the best job with greyscale "off" (I normally print greyscale to conserve ink), and set to "standard" or "high" quality. The "draft" setting prints much faster, but the grid lines come out so light that the graph paper is barely useable.
http://www.printfreegraphpaper.com/