Geraniums are one of the easiest plants to grow from cuttings and have a high success rate. Some people simply push a piece in the ground and have success. To take a cutting, snip a piece off just below a pair of leaves with a slanting cut. Take a piece about 3 or so inches long - it doesn't matter too much, and place in sand soil or potting mix. Keep just moist - if too wet they will rot- and soon they will take root.
Waterlily and watermelon (blossom)
Probably, just ask for the herb section in your local nursery or garden center.
Chamomile recutita (Chamomile)?
Maybe Oxeye instead