How can I do the 90-day reporting online in Thailand?

To do the 90-day reporting online in Thailand, you can start by visiting the provided link to the immigration site: https://tm47.immigration.go.th/tm47/#/login. First, you need to register using your email address, and the system will send you a password. It's essential to have a recent filed TM30, as reporting may be rejected if the address on record is incorrect.