Here is what all of us gym goers are looking for who find some of the standard exercises difficult. This is a fairly comprehensive list of your basic gym movements and multiple ways to cater them to your needs. No matter if your strenght is out of this world or if you would rather use a resistance band. This article gives you the correct way to execute them the correct way.
http://health.msn.com/fitness/articlepage.aspx?cp-documentid=100252132This is a great article to keep on hand in case you have any questions in the future.