Grinberg's tutorial is pretty good. The book version is "Flask Web Development" (O'Reilly). There are some bits of it that are out of date. You can use my "flaskula" repo as a reference with some fixes: <a href="https://github.com/joeclark-phd/flaskula" rel="nofollow">https://github.com/joeclark-phd/flaskula</a>
<a href="https://scotch.io/tutorials/getting-started-with-flask-a-python-microframework" rel="nofollow">https://scotch.io/tutorials/getting-started-with-flask-a-pyt...</a><p><a href="https://scotch.io/tutorials/build-a-crud-web-app-with-python-and-flask-part-one" rel="nofollow">https://scotch.io/tutorials/build-a-crud-web-app-with-python...</a><p>The first one whets the appetite with an overview/setup and the second one gets your hands dirty building a CRUD app.