It is a "preview" and currently does not contain any information about service workers. I did not realize that until I created an account, invested some time cl

It is a "preview" and currently does not contain any information about service workers. I did not realize that until I created an account, invested some time clicking through a bunch (too many) dialogue boxes, and was presented with a message that part 2 would be emailed to me. I do not currently feel enticed, I feel a bit annoyed. Nice flash animation but the title promises to teach something and that is misleading and should be changed.