Can’t find the instruction manual for your BlackBerry? Your old HP LaserJet? Adobe Photoshop? Head to SafeManuals, an online repository of instructions and user guides for a whopping 900,000 products.

You can browse the guide database or search for a specific brand, product, model number, etc. All manuals on the site are stored in PDF format, so you should be able to view them on any OS (and even many smartphones). If you have some user guides of your own that aren’t in the directory, you can upload them and they’ll be preserved for future reference.