1. Create Shapes

First create your shape layer that you wish to make copies of.

2. Enable Offset Paths

Second expand the shape layer and on the right of contents select Add > Offset Paths

3. Offset Paths Options

This will open a new option below the shapes labeled Offset Paths. Expanding this out opens up five options. Utilize keyframes on all of these in order to create unique animations.

• Amount: Adjusts the amount of offset to the repetitions. Positive numbers lead the animation outward with negative numbers forcing the offset inward.
• Line Join: Specifies the connection appearance from squared off (bevel), round, and pointed (miter). 
• Miter Limit: According to Adobe, a miter limit “determines the conditions under which a beveled join is used instead of a miter join. If the miter limit is 4, then when the length of the point reaches four times the stroke weight, a bevel join is used instead. A miter limit of 1 causes a bevel join.”
• Copies: Determines how many copies of the path are made.
• Copy Offset: Adobe lists copies offset as “moves the shapes outward or inward. This enables you to create interesting backgrounds such as with a retro vibe. You can also create concentric copies to generate geometric textures, kaleidoscopic effect, and patterns. You can also create mandala designs, motion posters, and animate letters. If the letter copies tend to merge into each other, try reducing the stroke width.