I got my first ever tablet, and it was a Samsung Galaxy Tab 3 (8 inch) 16 gig (16 is more than enough) you can always add in a microSD up to 64gig.
It was $279.99 at best buy. Only does WiFi, but thats fine, as we have tons of hot spots everywhere here, but mainly will use it to read ebooks and use twitter and facebook.
What you need with it? You need a good pair of buds... sony has some good ones I got, they were $29 at target, and sound GOOD. came with all sizes of buds too.
I gotta get a case today.. my greasy hands make me keep wiping it off.. lol.. try to find a good case that also allows to have it stand up.. so you can monitor it while you work.
And if you don't want to touch it and get fingerprints on it, a Samsung Galaxy Tab Stylus (its $14) at amazon.
Thats all ya need really..
BTW. when your battery dies in the future, don't send it in, as the warranty will have been over before the battery dies. go to the link below, and watch how to remove the battery yourself. they use a plastic 'stick' thingy that they send you. and a battery--but I'd buy a samsung replacement battery, as 3rd party batteries can be dangerous... on samsungs site, they sell it for around $40 I think... but sending it in is like $130!!! lol.. ugh, naa.. watch the video, its simple to do.
Saves you cash too!!
(This is a video of a Galaxy Tab 2 not 3, but its the same way with 3)
I wouldn't buy their battery, again, go to samsungs support website, enter your model, and you can buy it.. but get that plastic tool... I'm sure they sell them somewhere.. amazon maybe?
Heres one--but they provide tons of tools as well as the plastic tool.. for $10.95
Amazon Link