I here is a great site that I use all the time. They a have all the basic commands that you need to learn..
http://www.sshcommands.co.uk (http://www.sshcommands.co.uk/)
Thank you David for allow us to post this.
Yes, it is a good website. Also, you can use the man in linux to know more about each command and their parameters
Very nice resource, thanks for sharing this!