Solo Ads are good but you just have to make sure that you test your sales copy. Once you have an email that is getting you a lot of opt ins to your list you can send it out to way more lists and grow really fast...but you have to pay for it. So that is why you want to make sure that it is converting before investing too much into it. You could also launch a WSO (Warrior Special Offer) and that will help you build a list of buyers. You could create a cheap product, sell it for 7 bucks, and you will start building a list. You can even tweek the settings in the WarriorPlus Area (which is where the payments for WSO's are handled) to automatically ad people who buy to your autoresponder without optining in. it uses their info from paypal to ad them to your list. Hope this helps, lots of great advice from everybody else too.