The official magazine for HP calculator lovers
Interesting articles from very particular angles on HP calculators
A page with links to pdfs of all HP Journal numbers!
At the end of the page there is an excel file with all the articles per issue published. This file has been compiled by HP
HP Keynotes was a publication of the Corvallis Division, and was published from 1977 to 1982 during 21 issues. It gave information on new products, programming tips, programming libraries and it was sent to customers of the division and subscribers. It had less pages than the HP Journal and its articles were less in depth than his brother newspaper.
Some interesting HP calculator related videos
Advanced Manuals for diverse calculators
A short description about RPN and why it is better for you and I
Self Test for different HP calculators
HP15c Programming Tutorials from Eddie´s Math and Calculator Blog
A wide range of documents of interest to calculator enthusiasts