SEOPresser still the best for onpage op?

You're right,

the plugin doesn't do any SEO on it's own but I still find it helpful to remind me to do it and with Yoasts SEO plugin being free there is nothing to be lost by installing it.

I use SEO Pressor and I like it, but I purchased it long time ago when there weren't so many other options available. Now I would probably go for one of the free or cheaper alternatives that do pretty much the same thing, like yoast and easy wp seo.

Nothing more to elaborate really. Just ensure the Titles are descriptive (and include your keyword or a variation), and just write for the reader in mind. If sticking in a keyword makes a sentence looks retarded, don't do it.

You need to focus on main keywords, but you need to do that in a logical way.

Google is well beyond keyword stuffing, which is what people are doing when they harp on about the correct keyword density per text page. There is no correct keyword density when it comes to SEO, it's a load of BS that people have used as a selling technique for whatever it is that their selling, in this case it happens to be a WP plugin.

Your main keyword should be in a few key spots on your page.

Example, of a few key locations for your root keyword (keyword once per item):

• Page Title
• <h1> tag
• First sentence of your article

Page Title - The page title is a given, considering most times the page title will also be your SERP title.

<h1> tag - The <h1> tag is also a given since it's your main heading tag.

First sentence of your article - The first sentence is dependent on a few things & varies on each site. If your running short snippets of text on the category page, that keyword will be shown. Last, Google will not always use a Meta-description tag (IMO you don't need a Meta-Description tag), they'll sometimes grab a more relevant snippet of text someplace on the page based on the search query.

Just because you want to rank for car insurance doesn't mean your traffic lands on your page via a Google search for the exact search phrase car insurance. Your traffic might have searched for best auto insurer in Chicago. Notice the keywords auto insurer, instead of your intended keywords car insurance.

You can point Google in the right direction with your intended keywords (car insurance), but when you throw tough competition into the mix, additional themed keyword patterns related to the original keyword on your page can be very powerful in the SERPs.

In the end, you need both your original keyword & additional themed keywords, just use the original keyword in moderation in key spots on your page.

Also know that supporting pages of your keywords are a great asset to have. Supporting pages give your traffic more info. on the subject, & also with proper internal linking give you a competitive advantage in the SERPs by setting your site up to rank multiple pages per single keyword/phrase & tells Google your an authority on the subject/keyword.

Now don't get me wrong on supporting pages, it's not about pumping out large quantities of pages, it's about keyword themes & internal linking. Link only when links make sense.