this is my first time downloading a font and i have no clue what to do next. i went to dafont.com and clicked the download button for scriptina and as soon as this popped up (picture shown) i didnt know what to do next. .. can somebody please give me a step to step guide on what to do next ?

Go to control panel, appearance and themes, then at the left hand side there's this folder called fonts. Just drag the file or copy and paste it there. It will download it.
=]

With my computer, you have to open it before it will let you use it... but it may just be Photoshop.

Yeah, like on my comp, I usually go to "Start" and then "Settings" , "Control Panel" and find the font folder. XD

I keep forgetting that the fonts folder is in the Control Panel... I spend like 5 minutes just trying to get to that folder the LONG way.