I assume you have AWS account and you have created virtual machine as shown in the Video. This tutorial would help you to solve following questions
Assuming you have key (.pem) with you:
chmod 600 your_key.pem
ssh -i your_key.pem ubuntu@ipv4public_address
scp -i your_key.pem -r path/your_data ubuntu@ipv4public_address:~/path_on_Ec2/