First of all, the site is best viewed at a resolution of at least 1024 x 768. Anything smaller will force you to use a slider bar to read the pages: no fun at all. My apologies to those who don't have such an option, but the majority of all monitors nowadays can achieve this, and it makes for the best reading environment.
If the size of the type on this site, or the spaces between the lines, aren’t to your liking, you should be able to adjust them in the usual way (hit CTRL and then use the scroll button on your mouse; or use the “View” menu on your browser). If you are having trouble getting satisfactory results this way, you may find it useful to disable the site’s automatic formatting. On Microsoft’s Internet Explorer you do this by going to Tools… Internet Options… Accessibility… and then checking the boxes to ignore the font styles or sizes (or both) specified on web pages. Then set your own font (still on the Internet Options page) and play again with the browser’s type size settings (under the View menu).
If you use Mozilla’s Firefox browser, you likewise can fiddle with Tools …Options …Fonts & Colors. Check "Always use my fonts"; then set your preferred font elsewhere in that same window. The Microsoft browser produces slightly better results for some people (sorry!), but it may depend on what sort of monitor you use.
If none of this helps, please let me know. I'm still working on making the type easy to read on every computer screen.