1. school laboratory: the engineering laboratory of a university usually provides welding equipment and related materials, and students can practice in the laboratory. At the same time, the laboratory will also provide guidance and supervision to ensure the safety and correctness of the operation.

2. Maker space: Maker spaces near some universities or cities are usually equipped with welding equipment and tools, and provide training or guidance to enable students to learn and practice circuit board welding technology.

3. Professional training institutions: If there are no institutions providing relevant equipment and training in the school or nearby, students can consider joining professional training institutions, which usually provide special courses to teach welding technology and practical operation.

No matter where you choose to weld, you should follow the following principles:

-Ensure a safe welding environment and wear relevant protective equipment, such as goggles and gloves.

-Mastering the correct welding methods and skills, including the preparation for welding circuit boards, selecting the appropriate welding equipment and tools, mastering the correct welding temperature and time, etc.

-Comply with welding specifications and standards, such as the location and spacing of solder joints, wiring and connection of circuit boards, etc.

-Be careful and patient in the welding process, and try to avoid mistakes and damage.

Finally, I suggest that you consult the teaching institutions or related laboratories in your school first, and learn about the resources and guidance they provide, as well as other options.