Here comes a slightly updated overview of how much weigth your shoulder, your tripod or your rig is supposed to handle. Always keep in mind extra weight for mattebox, filters, cables, transmitters etc.

Thanks to Adrian T. for permission to reproduce his table.

A histogram is basically the lightmeter of the digital age. It is a tool that helps you getting the most out of your camera.

Click here for a nice explanation of what they are and how to use them. You need Power point or similar. Alternatively, you can download a zipped pdf file of the presentation here.