One good thing about getting help from books written by local Internet marketers is that you might actually find some tips that works better for you due to where you are. Different countries have different laws and resources, so what works better in the US might not be as viable if you're located in Singapore. And rather than running into a roadblock later down the road, it would be better if you find out about it from someone who's been there and found a solution that works.
For example, the FDA had recently enforced some email list new rules that made it illegal to make any sorts of income claims when selling or promoting a product. You may think that you're exempted from this ruling if you're outside the United States, but the truth is as long as your website that's selling or promoting is hosted in the US (which most hosting services are), then it also applies to you. Attending classes is another way to get affiliate marketing help.
Chances are you can find some courses being conducted by local Internet marketers on the topic of affiliate marketing. As mentioned at the start, affiliate marketing is a very popular method of making money online due to how simple and lucrative it can be, which is why most classroom based courses covers it.