Help with Research Techniques
For help with contextual research in archives such as local record offices, see Laura Schmidt's Using Archives: A Guide to Effective Research. Produced for the Society of American Archivists, this guide is geared toward US users but includes information and advice that can be applied to archival work elsewhere.
The National Archives in Kew (Richmond, Surrey) provides events for in-depth and professional training for aspiring archival scholars.
The University of Illinois has produced a helpful guide on using digital cameras most effectively in archives and collections.