Not bad. Short, sweet, and true:
A good place to start is with a simple description that you can carry in your pocket: MMT proposes that a country with its own currency, such as the U.S., doesn’t have to worry about accumulating too much debt because it can always print more money to pay interest. So the only constraint on spending is inflation, which can break out if the public and private sectors spend too much at the same time. As long as there are enough workers and equipment to meet growing demand without igniting inflation, the government can spend what it needs to maintain employment and achieve goals such as halting climate change. [Source]
The article then goes into the back and forth with the naysayers. My view is the naysayers are protecting something that ought not be protected. They are protecting large commercial interests because lifting the poor would give the bottom more and more power over everything. The large interests think that would be bad. I really think ego has a great deal to do with the thinking of those large interests, who fund their naysaying economists one way or the other.
Think about my title again: "A Beginner’s Guide to MMT." Actually, if you learn everything in that article, you'll know MMT plus the main MMT-based program suggestions. There's really nothing more, only supporting data.
As I've said over and over and over, MMT is not complicated or hard to understand.