MailChimp is a freemium email marketing tool. Similar to Wufoo, they offer a free plan (good through 2,000 contacts). A bit of background: MailChimp grew their business significantly when they decided to go freemium. How? At the bottom of every email, it would say something like Powered by MailChimp. Every customer email sent helped to spread the word. It created a kind of viral loop.
Testing can be conducted sequentially or in parallel. In sequential testing, often the easiest to implement, the various versions of the webpages are made available online for a specified time period. In parallel (split) testing, both versions are made available, and the traffic is divided between the two. The results of sequential split testing can be skewed by differing time periods and traffic patterns in which the different tests are run.
Hi Andrey, it is definitely not for beginners who have no idea how to even make money online at all. If you have a business already, funnel hacks is definitely something that you should invest in. I would say that there are definitely better and more affordable options for beginners too. Paid traffic is a tricky thing, but Funnel Hacks actually break it down easily on how to do it quickly.