An additional word of wisdom is not to expect a bump in revenues for some time. It will take some time to understand the behavior of your visitors and why they buy or bail out. Keep iterating and the sales will come. Keep the Forms Short and Late Long forms can scare many customers away. Just ask for the essential information.
Early forms can also scare customers away.
Always bring up the form after the purchase commitment. Also, send an immediate confirmation after the purchase. You can do this with a simple autoresponder message. You must design your site for instant updates to reflect sales, discounts or product availability. It is best to pull product information directly from a database for instant updates.