Okay so I've done the main homepage SEO with the title, meta description, and keywords with a plugin. But the plugin doesn't let me do Inner page SEO like the different categories I have on my website. So my question is how do I do Inner SEO? Do I go to the html and find the categories there and then start adding keywords or what? I don't want to mess anything up. I'm not asking what keywords to use I'm asking where exactly do I go to do Inner page SEO?