Each and every are used to refer to individual thngs and groups of things.

Each

Each is used to refer to individual items of a group. The emphasis is on the individual aspect of each item. For example:
- Give each student some candy. (Give to each individual person)
- Make each day better than its yesterday, and each tomorrow better than today.

Each is often used for members of a smaller group. For example:
- Our team won and we each got a prize.

The position of each can be at the front, middle, or at the end of a sentence. For example:
- Each of these shirts are only $20.
- These shirts are only $20 each.
- These shirts each cost $20. (This structure is slightly more unusual.)

Each can be used with the indefinite pronun one. For example:
- Twins can look the same, but each one has their own personality.
However using one is often not necessary:
- Twins can look the same, but each has their own personality.

Each of... is used for a selection of individual items. For example:
- Each of these books is interesting.
- Each of the top five employees will receive a bonus.
- We've won each of our last four games.

Every

Every is used to refer to a group of individual items. The emphasis is on the group. For example:
- Learn something new every day.
- Every student got a candy. (Everyone in the group got some candy.)

Every is used for how often something happens. For example:
- He plays soccer every saturday.
- They go abroad every year.
- I don't want to work here anymore. (I wanted to work here, but no I don't like working here.)

Every can be used with the indefinite pronoun one. For example:
- Did you eat the strawberries? Yes, I ate every one.
- Did you finish these questions? Yes, I got every one right.
Note that every one refers to things, but everyone is a completely different word used for people.

Every can't be used alone. For example:
- Did you finish these questions? Yes, I got every right. - This is incorrect.
- Did you finish these questions? Yes, I got every one right. - This is incorrect.

Every one of can be used when we want to specify what group we are referring to. For example:
- You must read every one of these books by next week.
- Did you finish these questions? Yes, I got every one of them right.

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