The most basic part is Tutorials Library, which can let you make basic and bad projects.
Go to your browser's web store. (free to skip if you already have scratch addons)
Find Scratch Addons. (free to skip if you already have scratch addons)
Install Scratch Addons. (free to skip if you already have scratch addons)
Find the addon named "Customizable editor menu bar".
Enable "Hide tutorials button" on the addon.
It uses pauses at the start, but please use a better one.
Grab the following blocks: Green Flag Clicked (if you'd like), Forever loop, x2 If block, x2 Key pressed booleans, x2 change position blocks
Here's how it will look like:
Grab the following blocks: Green Flag Clicked (if you'd like), Forever loop, x2 If statement (x1 Change "x speed" variable by 1 and -1 inside each one), "x speed" variable (Make sure to use this for only the sprite), x1 change x by "x speed" and set "x speed" variable to " x speed " multiplied by between 0.7 and 0.9
Here's how it will look like!
There are more to come!