Building a Duolingo clone with Bubble's visual programming tool is possible without any coding knowledge, making it accessible to anyone who wants to create powerful software. The process involves registering for a free account, completing introductory lessons, and choosing to start by wireframing the product design or building database fields. The next steps include configuring the database, creating workflows, and adding features such as uploading new words, displaying language lessons, and marking answers as correct or wrong. With Bubble's pre-built database and visual programming tool, users can create custom data fields, display dynamic content, and add features without writing any code. Once built, the app can be launched on a custom domain for $25 per month, with optional paid plans and templates available to help speed up the development process.