1 - You will find quite a few rotate apps in the Google Play store. That would solve that problem.
2 - You can separate to individual files, but Adobe Reader is no good for this. If you are prepared to pay for it, I find Boxoft PDF Split (http://www.boxoft.com/pdf-split/) and excellent software to do this. Alternatively look for freeware that can do the same job.
Of course, while you are doing this, you can correct the orientation problem at the same time and you won't need the rotate app.
2 - You can separate to individual files, but Adobe Reader is no good for this. If you are prepared to pay for it, I find Boxoft PDF Split (http://www.boxoft.com/pdf-split/) and excellent software to do this. Alternatively look for freeware that can do the same job.
Of course, while you are doing this, you can correct the orientation problem at the same time and you won't need the rotate app.
Graeme
1: Samsung 12.2" SM-P900: Android 5.0.2
2: eSTAR GRAND HD Quad-Core 4G 10.2": Android 5.1
3: Home-built BT pedal
Some of my music here
1: Samsung 12.2" SM-P900: Android 5.0.2
2: eSTAR GRAND HD Quad-Core 4G 10.2": Android 5.1
3: Home-built BT pedal
Some of my music here