Thanks to a lot of hard work by a team of volunteers from both sides of the Atlantic working together, we now have a French translation of the AAVSO Guide to CCD Photometry. You may download this Guide (free-of-charge) from here.
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The AAVSO Guide to CCD Photometry, first published in September 2014, is designed to be a basic introduction and guide to using CCDs to perform photometry of variable stars. With care, you can use a backyard telescope to obtain astrophysically useful data that matches the quality of those produced by professional astronomers, using exactly the same principles and techniques that are used at larger research observatories around the world.