1. You can search online for CAD tutorials and CAD gallery resources, such as Google, Baidu and other search engines; 2. On some CAD software official website, such as AutoCAD and Solidworks. Generally, there are corresponding tutorials and gallery resources in official website. 3. On some learning platforms, such as massive open online course network, Netease cloud classroom, wisdom tree, Udemy, etc. Courses on these platforms often have many CAD tutorials and gallery resources; 4. In some CAD communities, such as CAD Bar, AutoCAD-China, etc. A large number of users in these communities share many CAD tutorials and library resources, so you can pay attention to these communities at ordinary times; You can buy some courses and resources provided by CAD education and training institutions, such as Chinese CAD and wheat field training. These institutions generally provide more comprehensive tutorials and gallery resources.