I use "site:" in my searches. For example, if I want a starting point for looking up a molecule, medication, supplement, etc... I go to google or bing and use

I use "site:" in my searches. For example, if I want a starting point for looking up a molecule, medication, supplement, etc... I go to google or bing and use "site:nih.gov some_search_terms" or "site:examine.com some_search_terms". If I am unsure what domains to start with, I follow the suggestion by PaulHoule in this thread and of course I also use uBlock and NoScript to avoid some ad-noise.