1. Use a comma before any coordinating conjunction (and, but, for, or, nor, so, yet) that links two independent clauses. You may need to learn a few grammatical terms to understand this one.

The most common punctuation marks in English are: capital letters and full stops, question marks, commas, colons and semi-colons, exclamation marks and quotation marks.

You can write “and” in full stop instead of putting comma or directly would also be good. It doesn’t effect about the matter of “and”.

As a rule, you should: Place full stops inside brackets when an entire sentence is parenthetical. Place full stops outside closing brackets in all other cases.

When you are writing, inverted commas or speech marks go before and after direct speech, surrounding what was said. Punctuation, such as question marks, full stops and exclamation marks go inside the speech marks.

Commas and periods that are part of the overall sentence go inside the quotation marks, even though they aren’t part of the original quotation. Unless they are part of the original quotation, all marks other than commas or periods are placed outside the quotation marks.

Periods and Parentheses When a complete, independent sentence is entirely enclosed by parentheses, the period goes inside the closing parenthesis. But, if the parenthetical material is nested inside another sentence, the period should go on the outside.

Punctuation shows how the sentence should be read and makes the meaning clear….The comma is useful in a sentence when the writer wishes to:

1. pause before proceeding.
2. add a phrase that does not contain any new subject.
3. separate items on a list.
4. use more than one adjective (a describing word, like beautiful)