Move a block over another block and when a yellow highlight appears you can drop the block here.
You can log in by clicking the icon in the top left to save your programs online.
You can change the project name in the top left of the screen.
Hover over File, then click Settings to change the name, description and whether the project is public. Make sure you click save before leaving this section.
To drag an input, you must click on the black border rather than the area where you type.
You can hover over an input area - - and it will tell you what type of input blocks it accepts.
If you're getting errors, make sure:
You're not using any variables or characters before they are defined.
All your blocks are showing up in the code section. If they're not, try reconnecting the blocks.