First off welcome to carrying around a pocket oracle, or pocket computer - take your pick.
that what I call it. It has more process capability than the first 4 computers I've owned put together. and more storage space.
so my 5 things for you.
1) despite all you can do with a smartphone (regardless of flavor) you still need a real computer - and sadly it probably needs to be a windows computer at that. most interfaces and sync features etc are geared toward having a windows based computer to attach to
2) however, you can if willing, type documents, make spreadsheets, read almost any format play music, videos, etc etc all with a thing you can put in your pocket. that said, I remind people of how much of their personal data in on their smartphone. not just your data, but also your contacts data. so please for both your sakes - rig so a lock screen for your phone and setup up some basic security features on it.
I do this example for people occasionally - if I steal your phone, I can have your name, address, phone number, etc etc. - but I also have your friends info too - if I'm at a party with you guys I can take your phone - get their addresses and info - and tell some other people they are out of their house, and that the home is empty. so they can be robbed, because I stole your phone. I'd be in the clear because I don't know these people and couldn't have planed that. by the way, yes I'm that azzhole.
3) it's addicting. not facebook or what ever, I don't facebook. hate facebook - but having the info ready in your hand is addicting. other than just handy to use info - like what's the nearest good italian restaurant near me that isn't a chain. you also have those stats like who rushed for more yardage last year Alabama or Ohio State.
etc etc. so now every conversation can and will eventually turn into who can find what useless correction faster. OH and there's that usefull info too. I love knowing what's around me even in my home town.
4) if you are like me - there will come a day when you miss your flip phone. I know it's hard to believe but you will. I do. not that I hate carting around my note 3 - I actually like it. and I had to go big instead of small and thin becuase it works better for typing and other BS. but honestly, if pressed it sucks as a phone. BT headset or not, speaker phone or not, don't care it sucks as a phone - compared to the older flip phone.
5) all that said you'll still feel naked without it. did I mention having all that info is addicting? you will get used to using the voice to text feature more than anything. again if you are like me. it's just handy to be able to dictate to the phone. Hell I've used my phone to type up a letter - by dictating to it while driving across town. then downloaded to my work computer - re editied (had to do that) and I was done.
That's the power of the smartphone, but like all powers. use it judiciously.