This looks great, I like how it looks like it doesn't just jump straight into assuming the reader knows the tools of compiled Javascript. One thing - I clicked

This looks great, I like how it looks like it doesn't just jump straight into assuming the reader knows the tools of compiled Javascript. One thing - I clicked a link very close to the top to get the pdf, I was sold quick. But the popup modal didn't say anything about why you wanted my Email, so I didn't enter it. I got to the bottom and say a small, light grey "no spam" promise so I eventually signed up, but I very nearly bounced.