This tutorial goes into all the details of how to use grids to paint in 1 point, 2 point and 3 point perspective. Then gives some perspective tips and tricks you may find helpful.

• A cube in 0 point perspective is a square
• Import a 1 point perspective grid
• Vanishing Point: is a point on the image plane of a perspective rendering where the two-dimensional perspective projections of parallel lines in three-dimensional space appear to converge.
• Horizon Line: The horizon line is a horizontal line depicting the viewers eye line.
• place vanishing point in the middle to the LEFT
• Draw 1 point perspective cube
• copy 1 point perspective grid, give it a different color
• place vanishing point in the middle to the RIGHT
• Draw 2 point perspective cube
• copy 1 point perspective grid, give it a different color
• place vanishing point in the middle towards the TOP
• Draw 3 point perspective cube
• Can draw a cylinder using a cube
• Distort Tool
• 3d scene and drawing in perspective is identical, it’s just in 3d placing your camera handles the perspective for you automatically.
• Wide Angle Lens = Vanishing Points Closer Together, Telephoto Lens = Vanishing Points Further Apart
• Everything above Horizon line is sad face, everything below horizon is happy face
• Scott Robertson book

If you really want to drive the point home, here's a little exercise you can try...

1. Download the 1 point perspective grid at a resolution of 4096x4096.
2. Import it into your favorite painting app, it's a png so you can bring it into almost anything such as Photoshop, Procreate or Affinity.
   
3. Draw a 0 point, 1 point, 2 point and 3 point perspctive cube just like in this video.