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Use by (not from) after the passive form to show the doer of the action.
Use to to express motion from one place to another, use at to denote position.
When speaking of a period of time in the future, use in, and not after. Here in means after the end of.
When you warn to show the means or the instrument with which the action is done, use with. By denotes the order of the action: The bird was shot by the man.
The following take by and not with: by hand, by post, by phone, by one's watch, by the hour, by the dozen, by the metre.