How do I set up a student ID?

Excuse me, I'm a bit confused about the process of setting up a student ID. Could you please walk me through the steps in detail? I'd appreciate it if you could cover all the necessary information, such as what documents I need to prepare, where I should go, and if there are any fees involved. Additionally, I'm wondering if there's a specific timeline or deadline I should be aware of for completing this process. Thank you for your help!