​How to create your own hidden service:

1. Install tor

2. Open /etc/tor/torrc

3. Uncomment these lines:
#HiddenServiceDir /var/lib/tor/hidden_service/
#HiddenServicePort 80 127.0.0.1:80

4. (Re-)start tor

5. cat /var/lib/tor/hidden_service/hostname to get your .onion address

Every website on your local port 80 will be redirected to the .onion port 80 (the default port when using a web browser)