+- [Quickstart](https://github.com/AsamK/signal-cli/wiki/Quickstart)
+
+## Usage
+
+For a complete usage overview please read
+the [man page](https://github.com/AsamK/signal-cli/blob/master/man/signal-cli.1.adoc) and
+the [wiki](https://github.com/AsamK/signal-cli/wiki).
+
+Important: The ACCOUNT is your phone number in international format and must include the country calling code. Hence it
+should start with a "+" sign. (See [Wikipedia](https://en.wikipedia.org/wiki/List_of_country_calling_codes) for a list
+of all country codes.)
+
+* Register a number (with SMS verification)
+
+ signal-cli -a ACCOUNT register
+
+ You can register Signal using a landline number. In this case you can skip SMS verification process and jump directly
+ to the voice call verification by adding the `--voice` switch at the end of above register command.
+
+ Registering may require solving a CAPTCHA
+ challenge: [Registration with captcha](https://github.com/AsamK/signal-cli/wiki/Registration-with-captcha)