Using American Passion Flower and Roseroot

I bought two herbs, one is called Passion Flower, American and the other was Roseroot. I am a student at Rutgers University and tend to become somewhat stressed out from my classes and wanted to order a stress reliever to help me out this semester. I read that both of these herbs will help my with my request. The only thing I am not aware of is how to use these herbs once they are sent to me. I ordered the seeds not the plants. Am I able to make a tea with them or maybe use them when preparing food?

The dried leaves and flowers of Passionflower (Passiflora incarnata) and the roots of Roseroot (Rhodiola rosea) are used medicinally.
The dried Passionflower is available at Richters. It is a relaxant and can help with insomnia and restlessness. This can be made into a tea by adding a cup of boiling water to half a teaspoon of the dried herb, and allowing to steep for 15 minutes.
Only the seeds of Roseroot are available at Richters. An alternative to Roseroot is Siberian Ginseng. The dried Ginseng root is available at Richters. Ginseng is normally used in cooking, by allowing it to simmer in a soup or stew for an hour, then chopping the root and adding it back into the pot. Ginseng acts to improve the body's ability to deal with stress.