Regarding "Front Buts"

Don't start your sentences with 'but'. Unless serving to emphasize a pause in a character's reasoning, a but at the front only indicates that you don't know what a dependent clause is. A but serves as a way to point out a direct contradiction, or problem with an original statement. If you start a sentence with but, you are saying that the full stop itself is contradicted. A period cannot have a counter argument against it, unless a character is releasing that the original statement is not completely accurate, and therefore not completed. Stop being lazy and learn how to use a comma to create a dependent clause (See the previous sentence). - Cheers

A Message on Brevity in Writing

Get your point across in as few words as possible.