If you have a C64 or any vintage computer that can run BBS and the service has a web browser, visit this website, select links and find Launch NekoBBS.
If you dont have a vintage computer, you can use a BBS program or go to Retrocampus's online BBS client.
Note: Proper BBS browser-friendly content will be coming soon.
Note: if the link below is not here, you are not using a BBS web browser.
Note: the link will appear if the JavaScript is off.
Launch NekoBBSProject by DronesFan