Rio Grande do Sul looking guy
There is a big difference between Brasilian-style yerba and Argie/Paraguayan-style yerba, I reccomend you to try both and choose.
It's the same plant species but the brasilian is almost pulverized and has no "maturation", few days between harvest and supermarket. Meanwhile paraguayan/argie yerba is stored for at least 3 months in big bales after being dried, and the amount of yerba-dust in the final product should be reduced to a minimum. Said dust is supposedly the reason why some people get more acid-reflux. Anyways, each yerba style has quality tiers, "premium" argie yerba has like a year of maturation.
Btw don't buy from Estancia Las Marias cuz they assasinated ~~slaves~~ workers during the last dictatorship among a long list of other feudal shenanigans
In any case, I recommend start with drinking mate cocido, basically tea but using a small amount of yerba instead of tea