For discou he. Tbeatermania.com and broadwaybox.com are a good place to start.
No one will have codes that far from now, however. Since Feb is a slow time, many, many shows will have them
Rush - is in person, waiting in line discounts. Usually sold as soon as the box office opens
Lottery is similar, except names are randomly selected for the discount. This usually happens an hour or two before curtain.
On line lottery is the same thing but doing it rigidly. Many have go e to this. Some even let you enter a few days at a time, ahead of time.
Playbill.com has a nice breakdown of which shows offer what.
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