Everyone needs a putter. The P1 is a good place to start.
The Discmania P1 is the archetype of a putter that suits everybody. It has a very neutral and glidey flight, so it is also good for learning clean form. When you learn to drive with this putter, it will teach you a lot about your throw. The straight flight pattern also makes putting a joy.
If you are unsure which putter to choose, you cannot go wrong with the P1.