Three suggestions that can positively improve this product:

1. At least on mobile (didn't see it on desktop) the landing page only contains the subscription form with no detailed indication of what is being offered.

Suggestion: given that space is free put at least the last issue alongside te subscription form, this way people can easily decide if they want to receive more of this via email. Also, it can retain people that won't subscribe but will return weekly for the new articles.

2. Sensational titles like "Become Bad Ass at Sales Without Sounding Like A Douche" may catch the audience but at the same time to push away others looking for a more professional approach.

3. Avoid articles and summaries like this:

Want your content to consistently make the front page of Hacker News? Think about all of the traffic, leads, and customers that will generate. In this book, Justin Jackson teaches you about the inner workings of Hacker News and how to take advantage of them to regularly get your posts to the front page.

It reads a lot like "how to spam HN for profit and get away with it" even if the content is not.

I'd recommend changing the colors, blue on orange hurts my eyes.