Where do I put comas and whats a conjunction?

In general, the comma is used where ambiguity might otherwise arise, to indicate an interpretation of the text such that the words immediately before and after the comma are less closely or exclusively linked in the associated grammatical structure than they might be otherwise. The comma may be used to perform a number of functions in English writing. It is used in generally similar ways in other languages, particularly European ones, although the rules on comma usage – and their rigidity – vary from language to language.

http://en.wikipedia.org/wiki/CommasIn grammar, a conjunction (abbreviated conj or cnj) is a part of speech that connects two words, sentences, phrases or clauses together. A discourse connective is a conjunction joining sentences. This definition may overlap with that of other parts of speech, so what constitutes a "conjunction" must be defined for each language. In general, a conjunction is an invariable grammatical particle, and it may or may not stand between the items it conjoins.

The definition can also be extended to idiomatic phrases that behave as a unit with the same function as a single-word conjunction (as well as, provided that, etc.).

Many students are taught that certain conjunctions (such as "and", "but", and "so") should not begin sentences, although this belief has "no historical or grammatical foundation".

http://en.wikipedia.org/wiki/Conjunction_(grammar)

Conjunctions take two sentences and combine them into one, thus creating a compound sentence (ex. but, and, or, etc.)

Commas are also like conjunctions but go before the actual conjunction

EX. Sammy was riding his bike earlier, but his mother told him to come inside.

Commas are normal also used when you need to put a 'break' in your writing:

EX. The gusts of wind rammed against the windows as cold rain splattered on the windowsill, thus the curtains were tossed in the air and left flapping in the monstrous gale. This night, like very few nights, would hold a dark surprise...

All forms of punctuation, especially commas, are great in making your writing more mysterious, exciting, etc. like the example above!

Hope this helped!

Conjunctions are words like but, and, or, and then that take two sentences and combine them. Commas go right before the conjunction.

Examples:

I wanted to go swimming, but it was only forty degrees outside.

They like to sing, and the like to dance.

She could read a book, or she could draw a picture.

comas or commas? see http://www.wikihow.com/Use-Commas

http://en.wikipedia.org/wiki/Grammatical_conjuncti...

hope that helps