1.Either Me Brooks or his son (washes, wash) the car.

2.Damont or his parents usually (help, helps) us.

3.He and his dogs (is, are) going for a hike.

1.washes
2.help
3.are

What is a good website to learn more about compound subject verb agreements?

Your answers are correct.

These sites will help you.

http://www.towson.edu/ows/sub-verb.htm

http://owl.english.purdue.edu/owl/resource/599/01/