Qual è la differenza tra lindo e bonito e belo ?Sentiti libero di rispondere con un esempio.

As LucaSTx said they're three are adjectives meaning "beautiful, handsome", in other words, synonyms. They can be used with people or objects (like purse, car, a building, clothing, etc.) and even landscape.
I think (that's my opinion and not a grammar rule) that we use "bonito" (feminine "bonita") when we see a person or object beautiful. "Lindo(a)" is a higher degree. For instance, an extremely beautiful woman is called "linda". And "belo(a)" I think it's more poetical. We can use "belo(a)" in a daily basis but no one does. I always see that word in books (even that "bonito(a)" and "lindo(a) can be used in books also).
But that's my opinion. Let's see if another one thinks differently.