I'm not familiar with the phrase "wet t" (and googling it was not helpful); I'm guessing it means palatalized. According to https://en.wikipedia.org/wiki/Irish_phonology
broad t's (next to broad vowels a o u) are dental, and
slender t's (next to slender vowels e i) are palatalized.
There are also on- and off-glides complicating the pronunciation of consonants.
The Wikipedia article is quite technical; there are more resources for pronunciation listed here: https://forum.duolingo.com/comment/30527560
That’s true, but since they’d discontinued the “hearts” system of penalizing mistakes, there’s no real penalty for not recognizing a new word — unless the new “health” system on the apps is essentially a rehash of the old “hearts” system. (I only use the Web interface, so I have no experience with the new “health” system.)
Ow i dont care about hearts or penalties. I just find it easier to learn something if you first see an example :) (otherwise you might even sometimes get stuck in your head with the random word you made up ;)) (I believe there is a heart system when you test btw, not with learn and strengthen though)