RocketStock offers curated free packs specifically for After Effects. Their text animation packs often come with video tutorials.

You can import multiple free templates into one After Effects project. Copy a background effect from Template A and paste it into the composition of Template B. Because AE uses a universal keyframe system, you can mix and match styles to create a unique intro that nobody else has.

While often used interchangeably, these two formats function differently in After Effects: