Dr David Lelievre covers affiliate marketing, blog monetization, and Facebook business pages in consistently general terms, the kind of advice, set clear goals, diversify your income streams, use custom tabs on your Facebook page, that could apply to nearly any online business rather than one this author has actually built.
The blogging income post makes one specific, honest point among the generalities: that different blogs serve different audiences, so a monetization strategy that works for one site will not automatically transfer to another, a caveat many similar posts skip in favor of a single universal formula. The affiliate marketing post recommends writing down goals and revisiting them regularly, treating consistency as more important than any single tactic.
None of the four posts names a specific blog, income figure, or business Lelievre has personally run, leaving the advice unanchored to any real example.
Read any of these four posts for a generic overview. Do not expect a specific case study or personal result.