This article outlines how to start a tech blog without spending any money. Firstly, it suggests finding a free blogging platform such as WordPress.org or Blogger. Secondly, it suggests coming up with a great blog name and topics to cover. Thirdly, it recommends creating posts by researching topics and linking to other blogs and websites. Fourthly, it suggests setting up social media accounts to promote the blog. Lastly, it recommends engaging with the community by responding to comments and starting conversations on social media.