With Chis's link to the model I can tell you this one is quite simple to use. Simply place two to three inches of water in the kettle and securely place the lid. (One hint, rub a little cooking oil on the rubber seal on the underside of the lid before placing it on the kettle… this keeps the removable seal from "scrunching up" when tightening the lid").
The automatic pressure regulator is a charm to use… previous models required placing a removable "rocker" weight on a stem on the lid and then adjusting the burner temperature to achieve the "right" rocking movement of the weight. Yours' also has the automatic overpressure valve so, in case something goes wrong the lid won't blow off.
Your problem is in knowing how much time to cook items. A good rule of thumb is that most foods require only 35% to 50% of the time required for normal cooking.
Lastly, Begin cooking under pressure over high heat. Once the pressure cooker comes up to pressure, lower the heat to a low burner setting so that it maintains pressure without exceeding it. This is easy when using a gas range. If cooking with electric, use two burners: one on high heat to get things going; the other on low to maintain pressure.
If pressure appears to be dropping, raise the burner up slightly.
There are plenty of online sources for pressure cooker recipes, such as here:
http://allrecipes.com/recipes/everyday-cooking/cookware-and-equipment/pressure-cooker/