If you’re willing to take on some risk and have the heart of a true hustler, you can make extra money online doing commission-only sales for startups and other businesses. While you won’t be getting a regular salary, with the right sales strategies and skills as an inside sales rep, you can make decent money for each sale you bring in. And because you’ll most likely be working with startups, if you can negotiate a little equity you could profit big time if you're pitching a solid product and the startup succeeds.
If you worry that your readers won’t like the fact that you’re making money, I encourage you to shift your paradigm on this a bit. If someone provided valuable information to you, wouldn’t it be nice to reward them a bit? Maybe they taught you something. Maybe they saved you time for not having to search for the information themselves. Maybe they showed you some great uses for a product you were considering buying anyway. Whatever the case, if you’re providing affiliate links in an ethical way, no one should fault you for it.

AWIN is probably best for experienced affiliates who can hit the ground running without a lot of guidance or feedback from the network. There is a $5 fee charged to apply to become an affiliate, but if you’re approved, the $5 will be added to your account. If your application is denied, however, you will lose the $5 fee. AWIN operates globally, but it is most heavily concentrated on British and EU merchants.
The topic you choose must have enough depth that you can create a lot of content for it. This is important for building an authoritative site, for search engine optimization, and most importantly, for the end user. If you don't have enough content about a topic, you're not going to be taken very seriously as an authority on the topic and it's unlikely you can convince someone to make a purchase from you.