Hello, I have Assetto Corsa on the computer since today. I would begin with pleasure a formula 1 Season, are there in addition some Mods?
Is there a whole car Package(Bundle) as a Mod while several cars are included?
I'd recommend getting the Red Pack DLC which includes the Ferrari F138. Then download the mod below as it has all the opponent cars you need to make a complete grid (in my brief testing they're actually pretty good). http://www.racedepartment.com/downloads/ferraris-opponents-2013-offline-edition.12188/updates A good portion of the tracks are available already in the game or through our mod downloads section here, any remaining ones you can find elsewhere on the internet (but we are forbidden to post links to external downloads so you'll need to find them on your own).
As for improving graphics, that would depend on your system specs and you'd probably need some more educated than me to help get things dialed in.