Use the arrow keys to go through the project!
I hope this was helpful! If you have any questions, let me know! I'll make a more up to date tutorial later. :) I'm working on a more detailed "Introduction to vector" It'll have information on all of the tools in the vector mode! It's here: http://scratch.mit.edu/projects/49619890/ Just a note, it is not completely finished and your tips to make it easier to understand would be great!