Rep Power: 0

I have an 05 Civic LX and want to put some sort of diagnostics in it. I'm new to this subject so any help would be appreciated. I would like some sort of screen, preferably a touch screen, that can display all sorts of diagnostics. I don't want it to do any media or GPS, solely diagnostics. Should i get a screen and car PC then install diagnostics software on that? Or are there other "pre-built" systems out there. Thanks for the help.