For audio, I recommend the SmartLav+ Mic made by Rode. It attaches to the iPhone.

Here is the full story shot using the above gear and edited on both the iPhone and MacBook Pro in Final Cut Pro X

Need Simple, Low-Cost Podcasting Equipment?

Below I give my recommendation. It'll get you started without a major investment and you'll still have sound quality that is professional. This desktop setup is good for your office or home. If you're traveling you'll have a portable mic stand that comes with the AT2005USB mic. It's not great, but is very light and in a pinch, it'll work. You can also later upgrade to better portable options.

I recommend this setup:

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Hootsuite

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Microphones:  Here are two of my favorites. For those on a budget or those who are on location a lot, you can get the AudioTechnica for under $100, AudioTechnica 2005USB is plug and play with your laptop. You can also use it with recorder devices for field reporting. See Recorders below. The bundle package is an excellent value and makes it very portable.

I highly recommend protecting your gear, so the Kit is quite nice:  AudioTechnica 2005USB Kit. When in studio, I use and love my: Heil PR-40. You don't have to have radio station studio with a soundproofed room to make this dynamic microphone sound great. Give it a go and you'll see why it's a few hundred dollars...still an excellent price for the high quality. Splurge on this and you won't regret it. I promise! Other Options AudioTechnica ATR2100-USB  or   Sennheiser  microphones which I use for TV broadcast productions as well as when shooting with my DSLRs.

Recorder: Zoom H4n or  Zoom H1 External hard drives: LaCie and G-TechnologyiPhone (smartphone) Video Equipment Rode SmartLav+ – Connects directly into your iPhone for recording audio and using while shooting video on iPhone

Shoulderpod – For steady shooting. Makes holding the iPhone for video shooting and still photography a breeze; keeps you steady. Selfie Stick – A must not only for capturing video/photos of you but also for high and low angles. I use this a lot when shooting on location and in odd places like riding on elephants or in trees. Watch the video below. It was shot and edited exclusively with the iPhone6+ while on location in Thailand.