Do take note that your character doesn’t jump high or long, so you need to properly time the jump to avoid obstacles.
If you hold your tap, the character will jump consecutively, which is handy when you’re facing consecutive obstacles at once. To do that, you have to make the character jump, which is done by tapping on the screen.
The character will continue moving forward automatically and your job is to make sure you’ll avoid obstacles and gaps along the way.
Unlike many games, Geometry Dash Lite doesn’t have a tutorial, which is okay since it’s not needed.