I have several accounts on Phone it's not a big deal.My phone came with nothing and 4 steps to start it up. I now have 4 different accounts associated with it - gmail (needed to get apps), samsung (needed for something on the phone), cricket (needed to access account info for data - and which I promptly forgot the login name and pw for) and something else. It's absurd.They should have set your phone up with a Google Chrome account and gmail account.
If you set up FB on your phone, don't have it set up to auto notify you of updates/ notifications as you will find it eats away at your battery.
I downloaded Dropbox on my phone and my PC so I can easily share my phone pics on my PC, then I delete on the phone and Dropbox. Dropbox is free for ?number of space then you can pay. I just want it to be an easy share..
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Gmail, another email, Apple ID which covers most of their apps, FB, TA, a bunch of different apps, etc.
Get used to it