Login to your Raspberry Pi with the default user/pass:
user: pi pass: raspberry
Run the following in the terminal:
$ sudo raspi-config
Navigate to ssh, press Enter
Select Enable or Disable SSH server.
$ sudo reboot
After the Raspberry Pi is restarted check your ip-address with:
Write or note down the ip address!
It is also good to change password, so nobody else can get in. Do this by running:
$ sudo -i $ passwd pi
And remember the password so you won’t forget :)
Then when you want to SSH to your Raspberry Pi from another computer, just enter:
ssh pi@<THE IP ADDRESS YOU GOT WITH IFCONFIG ON YOUR PI>