Hey, I am a bit confused about choosing keywords, I have found couple of good keywords in the same niche, and let's say I have one main keyword "*** *** for sale" and 4-5 other secondary keywords like: "cheap *** ***" "best *** ***" and etc. Okay, I understand that I have to create a website around the main keyword, but how can I use the secondary ones? Should I write articles optimized for them? Should I create a different page for each of the keyword and rank those separately? And how many secondary keywords is good to have? Thanks in advance.