Usage: I vs. Me

“I” and “me” are both first person singular pronouns. The former is used as the subject or part of the subject of a verb while the latter is used as the object of a verb or preposition. You can think of “I” as the doer of the action expressed by the verb and “me” as the receiver of the action.
 

Usage: Everyday vs. Every day

The proper use of everyday and every day is something that still confuses a lot of people. In fact, you will see "everyday" used instead of the proper "every day" in ads of popular products.