CTA needs a pop up to collect email address

When a customer goes to my landing page and they are thinking about buying my product, we have some pdf giveaways if they are on the fence. WHen they click my CTA to the content, there should be a quick pop up asking for their email address so i can follow up with them later. Right now my CTA just leads them directly to the content: http://info.shoppersview.com/self-storage-pricing-sheet (click on blue CTA, should have a registration barrier there)

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