Hello,
I see you want to make a simple, basic plaformer! I'm here to guide you all the way!
1. Create a project, any size will do! Be creative and experiment with different settings.
2. Add a new sprite, name it player. Design, Resize and Customize to your hearts content!
3. Add the behaviour "Platform"! This allows you to use the arrow keys to move around and interact with the world!
4. Make another sprite and name it Wall/Platform! This will act as your ground to stand on platforms!
5. Give it the "Solid" behaviour! It prevents any object from passing through!
6. Test your game and create more platforms! The more, the better!
Congrats, you learnt the basics to making a platformer!
Next, adding more levels and winning mechanics.