Do i need to start my site with several articles/pages? can one article/page be enough assuming i don't have any idea about how to add more content? e.g. i decide to make a "how to x" post about an ultra specific thing and the post leads to an affiliate product as well, can i stop there and promote the post? google ranks individual pages right? I honestly don't know how to make a content rich blog and i don't know if thats the point of blogging AKA keep posting stuff. I can probably start with 1-2 good articles but then i will struggle until i gather more experience, is it worth it?
Also, if the plan is to make very few articles, is it better to go for a blog or youtube?