I've also found that the best way to avoid search spam is to ignore the web entirely and go to well-reviewed books about my topic of interest. I tend to search

I've also found that the best way to avoid search spam is to ignore the web entirely and go to well-reviewed books about my topic of interest. I tend to search for books on Amazon or Abebooks, check out the reviews, and then buy them if the price is reasonable, order them at my local library, or download them from LibGen if they're hard to get or too expensive. It takes longer, but the quality of information is much higher. For example, I was learning about wine recently—the web is full of SEO-optimized junk about wine, but there are many excellent books on the topic. Snippets in Google Books are also quite useful if I don't need a full book.