Simon Wren-Lewis is fantastic to read on macro-economics.
At present he has two posts out on examining nominal GDP targets.
The first one is my-verdict-on-ngdp-targets
The second is ngdp-targets-and-uk-monetary-policy
They are a MUST read for anyone interested in this topic so all you MMT's out there go read!
While you are there check out Jeromie Cohen Setton on blogs-review-the-economics-of-a-regime-shift
Of course all these articles will be on Around the Traps