I like to have at least 5, preferably 8-10, articles already published on the blog - so when people come they can see you’ve written useful stuff already and don’t just see a blog with one post.

I also like to have at least 5 posts already written but held in reserve as drafts that I can post in the next few days after launch.

I find that when launching a blog you can be a bit distracted by the excitement of it all, by promoting it, by responding to comments etc - so content creation can sometimes take a bit of a back seat.

If you have 5 posts in reserve (I’d even prefer to have more than that) it means you can keep any momentum from the launch going for at least 5 days without having to write a whole lot more. In fact I usually start a blog with just 3 posts a week and gradually increase the frequency of posts over time - so 5 posts