Central Texas Genealogical Society will offer guest speakers the fourth Monday of each month at 7 p.m. in the downstairs meeting room at the Waco Central Library, 1717 Austin Ave.

On Jan. 25, Bill Buckner, manager of the periodicals/genealogy division will present 30 Internet sites to save to favorites.

Gene Tidmore will be at the Feb. 22 meeting. The retired Baylor professor will offer a mathematical approach to genealogy.

The meetings are open to the public.