First off, you're going to want to sterilize the jars. You can do this by running them through the dishwasher (no soap) or boiling them on the stove.
In the canning section at walmart, they had a funnel so we definitely swiped it since it would make things so much easier and less messy!
Then you're going to scoop whatever you're canning into the jar, we did chili :)
Then you're going to pack it down to get all the air bubbles out.
Then throw the lid and the twist top on and get it tight
Then you're going to want to fill your pressure cooker up to the first line with boiling water. (read the instructions and it'll tell you where to fill) We got this pressure cooker at Walmart for $60. My husband said that this was a good price. We filled it up and turned the stove on so the water would boil while we were doing the jars. When the water is boiling, set the jars into the pressure cooker.
Then put the top on and lock it on there. On our cooker, the top knob will rock back and forth to let you know when to set your timer (this all depends on the cooker). When the knob started to rock back and forth, we set the timer for 90 minutes to cook.
When the 90 minutes are up, take the cooker off the burner and let it cool. When you are able to grab a jar, take it out and let it cool out of the cooker. Some tops may not have sunk in yet, but they will when they cool since the heat will suction down into the jar.
Then they are all ready to store or freeze! We just put ours up in the cabinet and will be eating them later on. We'll let you know how it tastes :)