If you just receive your brand new Raspberry Pi, you probably tried already to connect your keyboard, mouse, screen and network cables. (see my post about how to create your SD card with NOOBS)
But what if you want your Pi to run but disconnect all those cables and still be able to connect to it? (maybe not the network cable if you don’t have the WiFi dongle yet)
There is a network protocol called SSH. It’s a Secure Shell which will allows you to have a terminal to control your Pi.
By default this service is installed and running, so all you have to do is download an SSH client like PuTTY.
PuTTY is an SSH and telnet client, developed originally by Simon Tatham for the Windows platform. PuTTY is open source software that is available with source code and is developed and supported by a group of volunteers.
I use it for years now and it’s a portable application (no setup needed).
So start PuTTY and enter the ip address of your Pi with port 22 (by default), and if you want to can save the parameters:
Now click on Open and login with your credentials (by default: username: pi and password: raspberry):
To go further you can check my post about Remote Desktop Client connection and Dynamic DNS.