In the short term, the key elements for getting started is that you can record clear audio and film steady, stable footage (i.e., no shakiness).
If you're just getting started with video and hesitant to acquire new gear, start with this:
The above would not qualify as professional grade but it can give you a good foundation to build on. This video was filmed with the above setup:
Note how this was filmed in an unglamorous hotel conference room:
Here are our recommendations and rough guidelines to get started, as well as options for going further into more sophisticated equipment. Note: pricing may have shifted.
Rode is a microphone brand that is generally a solid choice for microphones. Most everything this company makes is well-regarded by video creators.