Add proper Tor setup guide

README.md

@@ -43,18 +43,41 @@ Usage of ./gtranslate:
       --user-agent string     User-Agent header to use
 ```
 
-If you want to proxy requests through Tor network, it's a good idea to
-set User-Agent of Tor Browser so it will be harder to identify such
-servers:
+# Using Tor
+Routing requests through Tor has its benefits:
+- Google will have a hard time tracking `gtranslate` servers as they act like normal Tor users
+- You probably won't get banned as requests are made from different IPs
+
+Despite that, it has some drawbacks:
+- Much slower response time
+- Might get capcha or some other junk that will block requests
+- If doing the wrong thing, you might get your server compromised (in terms of anonymity)
+- This feature is not tested in development
+
+First of, you need to set up Tor daemon on the server. Here's a guide on
+ArchWiki: [Tor](https://wiki.archlinux.org/index.php/tor).
+
+With default settings, it should start a SOCKS5 proxy on localhost, port
+9050.
+
+Also, to minimize fingerprint, you need to use a very common user agent
+on Tor network. And, you guessed it, get it straight from Tor Browser.
+If you have one, you can just open `https://httpbin.org/headers` and
+copy it from there. If not, the latest available is provided here:
+[Tor Browser's User-Agent](https://tor.stackexchange.com/questions/4890/tor-browser-user-agent-strings/21524#21524)
+ 
+Full setup:
 
 ```sh
 ./gtranslate \
   --user-agent "Mozilla/5.0 (Windows NT 10.0; rv:68.0) Gecko/20100101 Firefox/68.0" \
-  --proxy socks5://localhost:1080 \ # Set `Socks5Proxy localhost` in Tor config
+  --proxy "socks5://localhost:9050" \
   ...
 ```
 
-[Source](https://tor.stackexchange.com/questions/4890/tor-browser-user-agent-strings/21524#21524)
+If you have managed to set it up or experienced issues with this guide,
+feel free to shoot an email to my [public inbox][public-inbox] or tag
+`@yerinalexey@mastodon.online` on Fediverse.
 
 # TODO
 - Proper language selector