Why keep a file of printed manuals when you can quickly find them online?
Tucked away in the back of a file cabinet, I have an overstuffed folder of owner's manuals, many of which are for products I no longer own. I'm getting a jump on my spring cleaning this year and throwing out the entire folder.
I no longer need any of these printed manuals in my house -- even for the products I still own and use -- when any and all owner's manuals can be found online. The best part? You can do keyword searches to jump to a topic more quickly than paging through a paper manual or using a table of contents or index.
A quick Google search for a product name and model number plus "manual" will find almost alwyas find your desired manual. I went through my printed owner's manuals, found a PDF online of each manual I still needed, and then tossed the paper versions in the recycling.
You have a few options for storing your collection of PDF owner's manuals. You could download them to your computer and keep them stored locally in a folder. Or you could pop them on Dropbox, Google Drive or another cloud storage service so you could access them from any of your devices.
My preference is to use iBooks so I can refer to my manuals from my iPad, iPhone or Mac.
To get PDFs to iBooks, use the Safari app. When you are viewing a PDF in Safari, tap the screen to bring up a banner at the top with Open in on the left side and Open in iBooks on the right. Tap the latter and you will download the PDF to iBooks.
In iBooks, I created a folder to store all of my manuals:
To share your iBooks library across your iOS and OS X devices, make sure you are using the same Apple ID for each device and have the sync settings enabled.
In iOS, go to Settings > iBooks and make sure Select Sync Collections and Sync Bookmarks and Notes are both turned on. On a Mac, open iBooks, go to iBooks > Preferences, and make sure the box is checked for Sync bookmarks, highlights, and collections across devices.