Scratch

Hmm . . . that's odd. Here is a link to a pretty cool tutorial, in the mean time. http://scratch.mit.edu/forums/viewtopic.php?id=14751

I can also explain every block if you'd like me to. 

For now I'll start with the basics.

<when green flag clicked>
This starts most of the scripts, or the lists of blocks that make things happen. The green flag symbol starts these scripts, and the stop symbol stops them.

<forever>
This makes any blocks that are inside it repeat until the stop symbol is pressed.

<stop all>
This block stops everything, even the forever scripts.

<show>
This makes a sprite, or an image that does things (the scratch cat is an example) show itself, if it isn't already.

<hide>
This makes a sprite hide itself, if it isn't already.


These are some of the absolute basics. If you would like more help, just ask me!