I had a good time yesterday
It means "Nothing I am well you are good". Probably better to use "Estás bueno" in the second part.
bien actually means "well," such as how bien hecho means well done. In English grammar, sometimes you can use "good" in a sentence, and sometimes "well" can be used. The same goes for Spanish, only that it gets more complicated that, as you have to take into consideration other variations of bueno that might be gramatically correct, such as buen and buena._______________________________I've read that 'bien' is an adverb and that 'bueno' is an adjective.
good or well * Bueno is "good." Bien is "well."
"Adios ayer" in English means "Goodbye yesterday."
Either 'Pórtate bien' or 'Sé bueno'. Both mean 'behave'.
Fine can be synonymous with good. this words mean "bien" or "bueno"
If you mean, I've behaved good, the answer is: "Yo me e portado bien"
"no good"
Quiere devolver
"Muy bueno" means "Very good."
"Bueno tengo que" translates to "Well, I have to" in English.
That isn't Spanish. If you mean "ayer", that means "yesterday".