Any recommendations for a good CRM?

I would seriously consider launching a blog and posting content of the same type to the blog, in abundance. Then add a popup box to the blog to collect email addresses. Post daily blog posts about topics related to your blog and your newsletter. If you do this consistently, over time, you will build up traffic to your blog and also get people entering their email into your popup. This is the free way to do it...

Drip marketing (aka. drip emails, or lead nurturing) is often used by modern marketers to nurture their leads through the sales funnel. As others have mentioned the idea is to gain brand awareness and influence buyers through a regular series of targeted and relevant content or offers. Typically for top of the funnel activities you might offer something like a general whitepaper or something which describes the overall business problems that your prospects might be feeling. From there you can use a marketing automation tool to send through additional material or reminders periodically depending on how your prospects engage with you. The idea at the end of the day is to reduce that amount of direct time that a sales rep spends closing any deal by ensuring that leads have shown sufficient buying signals and are ready to purchase.

Treyedit.com is simple and easy

Use the "audience" feature on facebook and import all of your emails. Facebook will match them so that you can ran ads to promote your new startup or service to whoever has a fb profile with that email. Happy to help if you need more info

It sounds like you're off to a good start with your lead generation. While it is important to keep lead volume strong, it's even more important to have a way to follow up with these leads and continue pushing them through your sales funnel until you can convert them into revenue. Without that follow-up, especially if you're generating leads through PPC, you're likely wasting the budget and energy you're putting toward your marketing efforts in the first place. The first thing I'd recommend you do is create an automatic "kick-back" email that triggers as soon as a lead downloads your ebook. Be sure to thank them for downloading, give them a link to access the ebook, and then (most importantly) include your call-to-action for the next step you want them to take. Second, figure out how you're going to handle these leads from a sales perspective. If you're stretched for bandwidth, I'd recommend a system where you assign dollar values to different types of leads, and only have a sales rep follow up with your highest value leads. How much is an ebook lead worth to your business? How much is a demo lead? What about someone who actively requests to be contacted? You'll find that as you get these systems and processes underway, it'll be extremely useful to have a CRM system both for integrating with your marketing efforts and for helping your sales team to be able to sort and prioritize the leads they're reaching out to. Lead conversion is a daily focus of mine in my role at HubSpot, and I'd be happy to chat further about how to get a strong marketing/sales funnel set up so you're better equipped to manage the leads you generate and better able to convert them into dollars. Let me know if there's anything I can do to help!