A simple Google search on how to acquire IOTA will give you thousands of results. Different ways exist depending on where you are located, or what payment form you prefer to use. Usually, you get Bitcoins or another cryptocurrency from a cryptocurrency trading or exchange market and/or other people selling and buying online. Most cryptocurrency trading markets today accept IOTA. You can then exchange your Bitcoin’s for IOTA and use them to pay directly on Netz0.
A good place is to see the official IOTA website here: