The first topic is masking and I hope you enjoy it
All visual effects are created by combining different visual elements together. This allows you to add or remove items to or from your footage and create complex visual illusions for your audience.
In Adobe After Effects, each of these visual elements is represented by a 'layer'. Layers are placed on top of each other with each one obscuring the layers beneath by default.
However, you can create masks to cut out certain areas of a layer so the ones below will show through. This is called masking
Let's look at how you can create masks in Adobe After Effects!