When you are at the rental center make sure to ask to see how to start and operate this heavy-duty piece of material. Before getting too involved with other elements of the project, make sure to set the mixer up close to where you will need to pour the contcrete.
Remember: You will also need to have concrete finishing tools like a trowel, edger, float, and a level ready after you pour the concrete to smooth the wet mixture. The cleaner the mixer is when you start the easier it will be to pour your mixture out of the drum.