How do I use UPI for the first time?

To use UPI for the first time, you need to download a UPI-enabled app, such as the Paytm app, and register using the mobile number linked to your bank account. Once registered, create a unique UPI ID (Virtual Payment Address). Then, link your bank account by providing necessary details, which may be automatically fetched based on your registered mobile number. Finally, set up your secure UPI PIN to authenticate transactions.