What is the best workout to do at home using bumbbells and barbells only?

Answer 1

even without dumbells

Answer 2

Try this site:
http://www.bodybuilding.com/fun/exercises.htm

Here you can search the exercise for every muscle with given equipements.

ground/body weight exercises + dumbbells/barbells & a bench is more than enough to exercise almost all the muscles.

Answer 3

You can do everything.. basically.. Yeah.