Their , There , and They're
Their is the word you use when it is a belonging to someone.
There is the word you use when in, at, or to that place or position.
They're is they are.
Affect and Effect
Affect It means to impact or change.
Effect is the result of a change.
Its and It's
Its is the possessive of "it".
It's is "it is"
Whose and Who's
Who's is a contraction of who is or who has.
Whose is a possessive pronoun.
Accept and Except
Accept is wanted.
except is to exclude.
Good and Well
Good can be used with copular verbs.
Well is an adverb, which means that it modifies verbs, adjectives, and other adverbs.