I have got a hp compaq dc5800 microtower from my school and I want to put some new things in it but i don't know where to start
First of all I know next to nothing about computers. I want to use it for gaming and regular internet use and all I know is that it has a wd1600aajs-60waa0 hard driver. Is it good enough to keep or should I get a new one? Also I was recommended to get a new RAM and graphics card. I have no idea how to check what I have already.