Best approach on creating a Blog with images

Hi,

What's the best approach to create a blog which enables you to upload images as well just like the news websites?

Until now, I have made a blog to which I can upload a text body as well as a featured image to it and tags. However I am not sure how I can add images to the text. Now it seems like I have to write the blog in HTML format to I separately include the image upload location and copy paste the image tag to the post but this is a HUGE security hole.

I have looked around the web but I cannot seem to find any tutorial on that.

Suggestions will be appreciated!