All military pay is controlled by the Defense Finance and Accounting Service (DFAS). You can view your individual Leave and Earning Statement (LES) at https://mypay.dfas.mil/mypay.aspx. It's now CAC-enabled, so you don't have to remember your login anymore.
I found a very useful website here: http://www.dfas.mil/militarymembers.html. Among other things, it has an instruction on how to actually read your LES. This is really important, especially for people new to the Navy. The links in the upper right corner of the page tell you how to read your Navy LES. Click on it and read through the document. It's short, but it concerns money and time off...both of which should be highly valuable to you!
