Bolt

Bolt is a free visual scripting tool for Unity3d.

It's a powerful and intuitive way to create game behavior without needing to learn a whole lot of C# programming. Click the image to the left to get a quick overview

SRCoder Video Series

Here's a few videos from SRCoder on setting up and using Bolt.

This is aimed at beginners and no programming knowledge is required! So if you haven't programmed but want to learn in a fun and easy way, this is a good place to start. 

Official Bolt Tutorials

These tutorials start you in making a simple 2d platformer in bolt using a framework. Written instructions are included https://learn.unity.com/project/bolt-platformer-tutorial?_ga=2.24017402.1592062709.1610919300-1767016595.1580189278

Please note that some of the instructions are omitted and help is given in the comments section.