nckfrs

hello all i am new to running a server, yet i have my a+ certification i have not worked on or used servers before i got a computer and am running windows server 2008 datacenter i would like to set it up as a file server so wen im out working or at frans i can access my files i have already set up static ip and i figure out setup for a home network but i would like to be able to access from outside the home i can probably figure it out just a need a push in the right direction