Develop my blog and the income it generates

Hello,

I have a blog that generates about 100$/month via AdSense thanks to 1 blog post although I have written more than 200 blog posts since 2010. Back then I didn't know any SEO stuff, but even now, I have no idea how to develop it because it's not a niche website, it's a blog about high-tech in general.

In this blog, I mostly explain to my visitors how to use their computer, iPhone, Android phone… it's mostly tutorials and big news (events, Apple events, Google events…)

I would…

Develop my blog and the income it generates