For digital filming, you will of course need a computer, editing software and basic video production equipment. Hardware you will need includes cameras, additional memory cards, batteries, lighting, reflectors, tripods and microphones, cables and more. You can rent or lease any of these.
The type of camera you use also depends on the type of shooting you will be doing. Start with a camera that you find easy to work with in the field and in the editing room. Choose one that has features that you need and know how to use. Make sure it can be mounted on a tripod for hands-free shooting. Your camera is your tool in trade, so get the best you can possibly afford.
When you are ready to go on location, make sure that you have everything with you that you might need. This includes extra batteries, extra memory cards, lighting props, a tripod and even releases for locations and people you shoot.