Ok, I get it, thanks!From what I can see - the posts in the tutorials section are not in any particular order. Each post contains information about an individual Linux related topic. The order of the topics in the forum corresponds with the last time anybody posted comments/content in them. So posts with recent comments appear at the top.
Perhaps at some point @Rob or one of the admins here might be able to update the titles of each article to include a number to indicate the recommended reading order. Or maybe they could create a sticky-post at the top of each tutorials forum with links to each article in a recommended reading order.
But until then, it doesn't look like there is a set order. So perhaps take a look at some of the different topics and ask some questions if there is anything you do not understand.