Annie's Simply Beads offers a free eBook download. This Beading Guide is more of a beading tools guide. It lists a variety of tools and what they are used for with great pictures. Different bead material is shown but there isn't a lot about different sizes of beads. This is not to say that there isn't any, I would expect a chart and there wasn't one. Even so, this is a great resource and worth a download. I plan on printing mine out and filing in my jewelry making area. [Beading Guide]