If you haven't already started using Oracle Cloud services, then what better way than to sign up for $300 free credits for a pay-as-you-go subscription (valid for one month)? Simply visit https://cloud.oracle.com/tryit and click Sign Up. I did it earlier - it's really easy and was set up within an hour. To try it out, I provisioned myself a Standard Edition Database service - again, pretty easy. You can choose either a predefined set of options, or customise it to suit your needs (in terms of CPU's, memory, database version etc). You'll see the service in your console with a status of "Creating service...".
After about half an hour the service provisioning is complete. You may notice that provisioning a Database service actually gives you a couple of supporting others too - you can of course provision these standalone if required.
Starting/Stopping a particular service is as easy as this:
Next was to get access via SSH. To do that you will need to generate a key pair on your client machine using
ssh-keygen. Then simply copy your public key up to the client.