This site has tons of free magazines for every profession you can think of...in fact my hubby just started a new job in medical device sales and just saw two mags for him! They even have guides on your mobile phone or photoshop for dummies!
Free The Ultimate Guide To Your Windows Mobile Phone - If you have a Windows Mobile phone, you will know that stuff can occasionally get pretty difficult. These devices, which are basically mini-computers, have endless possibilities - and thus endless possible difficulties as well. Whether you want to (re)discover the most basic features and applications of your device, extend it with new applications and tools, or even flash a custom ROM, the Windows Mobile Guide comes to the rescue. This 50 page guide starts at the very basics of Windows Mobile, and quietly builds up its pace to a more advanced info.