The Colon and Capitalization
Do you capitalize the first word after a colon? If not, you should—but only if that word is a proper noun or begins a complete sentence. The AP and APA folks agree on this one.
He will be tested on three subjects: reading, math, and science.
He promised this: He will try his very best on the FCAT.
The following girls will attend the study session: Maddie, Ella, and Zoey.
Remember when we talked serial comma? Well, as you can see in the examples above, I used it. But don’t forget, AP and APA do not agree on this convention. APA says use it, and AP says don’t. When I write, I lean APA Style. I like the extra comma.