Yesterday, the Association for Library Collections & Technical Services (ALCTS) presented a webinar on "Preserving Your Personal Digital Photographs" by Bill LeFurgy. This very nice introduction into digital preservation can be viewed as an .wmv file at this link.
A slew of great preservation information can be found at the ALCTS Preservation Week website. This includes webinars from this year, plus past years. These webinars cover topics such as Taking Care of Family Textiles, Archival 101 and Mold Prevention and Remediation.