This looks fantastic! Please could you write some words aimed at potential recruits to qbix? What to expect, what not to expect. I noticed, in scanning your site quickly (... I think all content should bear the 'scanning user' in mind, but that's another topic) that php is mentioned. What php knowledge is required? What JS knowledge is required? Make it easy for people (I mean really, visitors who are pre-tutorial) to decide if they have the wherewithal for it to be worth them making a modest commitment to take it for a test drive.