Get the username and password
Of course, if you've changed the password you'll need to use the updated password.
Use the SSH command
The default hostname for the Pi is raspberrypi, so we can SSH in using:
Type the password when you see the password prompt. For security purposes you won't see the password as you type.
You might encounter a host verification warning that ends with something like this:
The authenticity of host 'xxx (xxx)' can't be established. RSA key fingerprint is 3f:1b:f4:bd:c5:aa:c1:1f:bf:4e:2e:cf:53:fa:d8:59. Are you sure you want to continue connecting (yes/no)?
Just type "yes" and hit enter. This is a security measure to let you know you're trying to connect to a host for the first time. After connecting, the host will be added to the known_hosts file, and you won't see this warning again.