A:AnswerI don’t know about the first part of your question, but it doesn’t have speakers. It has Bluetooth so that you can Bluetooth audiobooks to headphones or stereos with the capability.
A:AnswerThere is a very slight reflection when the light source is directly on the screen, but if you hold it at an angle away from the sun, it would absolutely be usable at the beach.
A:AnswerA pop socket would work. Personally I’d just go on Amazon and get a case with a hand strap though. You can get them for about $10 and they’re made to let you hold your kindle one handed.
A:Answer8GB is sufficient to hold 2000+ books. For math, just take a PDF and see its size and multiply number of books you will read or carry (max). If the size exceeds 8GB then go for 32GB.