The Janice Love books are what our local shop use for classes and are great. Following along with the book's text and you will quickly see how clear the directions are (don't try to just read, do). Hers also have good photos/directions for how things go wrong and how to fix.
Animated stitch diagrams to show "video" of hardanger stitches in action are free at
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-- it is very helpful seeing the stitches being done. They also have a series of $7 to $20 kits that each introduce a new stitch (and have all the supplies) in their Beyond Cross Stitch series in six levels of learning (for example, check this page on their website scrolling down for pictures
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Hearts of ... etc. Leisure Arts has a teach yourself hardanger book
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and search for item 3278). Nordic Needle's website has lots of free instructional/stitch pages and sometimes videos/dvds. Dover has some very reasonably priced books; however, in a lot of them you get more photos than actual instructions or diagrams so I'd peruse in your local bookstore before deciding if they are suited to your level (all are not suited for beginners but their really some great patterns in the $2.00 to $8 average price range). Hoffmandis.com will have hardanger patterns from various designers, hit their website and select "online catalogue" and then search for "hardanger" and then also look at found designer's other patterns; I'd recommend ornaments for a beginner (and the Cross 'N Patch ones, while truly lovely, for more advanced work as mentioned in another of your responses).