Normally I find good solo ads from warrior forum and safe swap, they give me higher conversion.
But, you should have you own squeeze page (with valuable free offer) which can capture email list, after they sign up you can make a onetime offer for affiliate product.
In this case, you probable can earn some instant money from one time offer products, and cover back the solo ads investment, and for long term, you able to generate a good amount of subscribers list, so can sell over and over again, but always remember provide valuable content.
What do you think? Do you have a better suggestion for more easier and faster method to make the first money online?