There are several ways to access previous years' papers for Commerce. Here are a few options:

1. Check with your school or university library: Many educational institutions keep a collection of previous years' papers in their libraries. You can visit the library and ask the librarian to help you find the relevant papers for Commerce.

2. Online platforms: There are various online platforms that provide access to previous years' papers. Some popular options include websites like Exam-Utility, Exam18, and TopperLearning. These platforms typically offer subject-wise and year-wise question papers that you can access and download.

3. Education board websites: If you are looking for papers specific to a particular education board (e.g., CBSE, ICSE, etc.), you can visit their official websites. These websites often provide past years' question papers for different subjects and streams, including Commerce.

4. Online marketplaces: You can also find previous years' papers for Commerce on online marketplaces like Amazon or Flipkart. Many publishers compile question papers from previous years and sell them as books or study guides.

5. Connect with seniors or classmates: Reach out to seniors or classmates who have already taken Commerce exams in previous years. They may be able to provide you with copies of their old question papers or guide you on where to find them.

Remember, while accessing previous years' papers can be helpful for practice and understanding exam patterns, it's important to rely on your textbooks, study materials, and guidance from teachers for comprehensive preparation.