Connect to an ec2 instance by Ssh is simple just open a terminal in windows or your os.
ssh -i "yourkey.pem" firstname.lastname@example.org
ssh -i "agecetweb.pem" email@example.com
Note that the ip address 22.214.171.124 will change everytime you shutdown your ec2 instance
eg if you would like to reconnect to your ec2 instance with this same command
it will not work just change that ip to the new one.