NEED HELP TO ADD 2ND HDD IN WORKSTATION

Hi and thanks in advance for any help! '-)

Need to install a 2nd drive specifically for often large video and audio files.

It would merely act as a dumping/storage area for same.

I've been told it's not that hard to do but wanted to check with some HP Pros prior-to attempting same.

I'd most likely get something like a WD Black, 3.5 7200 SATA but not locked into same.

Hopefully someone knows my Workstation listed above and could provide some 

tips and the steps required. I've tried searching online but get conflicting details.

Again, any help most appreciated!

Thanks, Bob