No, you don't. One of the reasons we love Webflow is because you don't need to speak any coding languages to make changes to your website. You literally control every single pixel visually, without limitation. That's why we love it!
Content changes such as editing text, adding new blog posts, portfolio items and swapping out images is really intuitive and easy.
Webflow's visual designer writes the code for you as you make design changes, but it is not quite the same as some 'drag and drop' editors you may have used before. Webflow has some great in depth tutorials to support your learning and allow you to maintain the professionalism of your website if you choose to make design changes to your website.