Tai Lopez is not giving bad advice but i don't think it's anything special either.
He's doing what he's the best at and that is marketing, selling you his courses online.
You could also go on Amazon, buy a few bestsellers about business and then you have the same "knowledge" he's trying to sell you.
Because you know what's better then materialistic things? Knowledge! LOL
The thing about Tai Lopez is, he's a marketing genius. I would be more interested to know how he grew his business on youtube so fast, get some ins and outs about the finances, than buy the actual "snake oil" he's selling people.
Usually the most interesting details about doing business are kept for themselves. Because you don't give your bread and butter away to other people.