How do I save changes to a PDF file, not "save as", in Acrobat reader DC?
Thanks to Leonard for the quick answer. I was going to ask if you opened it from an email message. If so, it is possible that the PDF can be stored in a temporary items folder. If this is the case, and that temporary items folder is read only, then you might see this error.
Why can't I open a downloaded PDF file on my mobile?
Download any PDF Reader app from Google Play Store and set it as the default app for opening PDF Document Files. Sometimes Google Chrome or Stock Browser does not allow to open the files even after setting the default apps.In that case, head towards File Manager App and choose your PDF file to open. If that does not work too, open the PDF Reader App you had installed, and locate the downloaded PDF file from the app’s browser. :)In case you want to check out Best of All PDF Reader & Scanner Apps, you can have a look here.
Buying books vs reading online?
Online being on the computer such as in PDF form, or digitally (kindle, nook, etc.) I love reading, and I feel the urge to buy books and have physical copies of them...but at the same, it makes more sense not to because of cost, taking up space, etc. As well as the fact that most books probably can be found for free online nowadays. Do you buy books, and if so, what form?