First thing your need to do is to crate a section that will hold all the categories of the topics you want to blog about.
In my case that is a section called Joomla Blog....pretty cool he?
After that, create the categories for you blog section.
Start out with the basic topics you want to write about.
For me it starts witj Joomla Blog setup, Joomla Blog components and Joomla Blog templates.
After those are completed, create a sperate menu for your Blog to hold the categories.
Create the links to the categories and choose the blog layout so that you can easily give an overview of your articles.
Start writing your articles, but make sure you use the "More" tag after your article introduction.
If possible create some small images that your can use per topic that you can incorporate in your intro.
The picture size is up to you, but I use a 100 x 100 pixels on this website.