A decent camera and tripod are essential for movie making, and having a microphone doesn't hurt either. As the teachers at my school shared one camera, I decided to use my one from home but I also experimented with my phone camera which I discovered could capture great video and audio. Shooting some test footage was really helpful as I uploaded it to iMovie to check the quality.
I didn't quite have the budget to afford a proper tripod, but found that a phone tripod fit both my phone and camera and worked effectively. I purchased both a table top and full length phone tripod which was really helpful and kept my footage steady. I purchased these on sale at Typo
It was really easy to focus on the action live rather than what the camera was picking up. Fortunately, my script writers thought carefully about the camera angles when planning the movie to ensure that we had a variety of shots. We also became quite inventive with our use of the camera. My table top tripod came in handy here and we were able to place it on the floor, on top of a playground and on top of a wheely chair which proved to be particularly effective.
Garageband is also helpful to adjust the soundtrack of the movie once you are content with your video. I used what I had learnt in our Garageband PLG when working on the sound of this movie.