#2: Another great program is Jon Dykstra's Niche Tycoon. This focuses on paid traffic and outsourcing content to make money with Google Adsense (and similar programs). It requires a bit more of a budget, and also has less of a support community than Wealthy Affiliate, so it's best for people with a bit of online marketing experience and some money to get their business going.
Always disclose your affiliate relationship. Most visitors will probably understand that graphic ads will lead to your getting paid, but if you write a review or use an in-text link as a recommendation, you want your readers to know that may lead to compensation as well. This ensures you retain transparency and trust with your readers, but also, it's required by the FTC's endorsement rules.