Before you invest in anything, ring the bureau and check the company, and Eric Goldman puts that near the top rather than the bottom. He is clear that plenty of legitimate businesses exist alongside plenty of shady ones, and that ten minutes of checking costs you nothing.
The most useful posts cover the tools. He reviews article writing software and a well known sponsoring course, twice, and treats them as purchases with consequences rather than as things to be excited about. There is also a plain explanation of how a binary compensation structure actually pays out, which is harder to find than it should be.
The network marketing posts repeat the standard advice: budget before you spend, work out whether this is a hobby or a business, and lead with what the other person gets rather than what you want.
Two posts have nothing to do with any of it, on back pain and on redecorating.
Twenty two posts. Read the software reviews and the binary explanation before you spend money on either.