A: Yes. If you own the 2010 CD-ROM version, insert it. Install the software. Then use a virtual PDF printer (like doPDF or CutePDF) and "print" each letter (A, B, C...) to a combined PDF. This takes 2 hours but is legal for personal use.
: You can install the digital version via the Oxford Dictionary app on Google Play . Note that specific language packs like Serbian may require in-app purchases or specific student editions.
on Android, which features an offline database of over 69,000 articles. Internet Archive How to Access for Free (Legally)