You may well find competing for points on the leaderboard fun, which encourages practice and habit-building for language study. It's actually kind of a fun challenge to guess the rules from examples. there must be a pattern here!! Likewise you will see adjectives declined to match the nouns they describe, but never explicitly explained why or how.

weird, when 'pueri' is the object in a sentence, it becomes 'pueros'. You will mostly see the nominative case for nouns, and the existence and function of the accusative and ablative cases will be sort of shown by example but never explained. You will also learn some basic vocabulary and sentence structure. What WILL you learn: if you grind this Duolingo course, you will absolutely master the present active indicative mood of a variety of verbs. I am currently working through LLPSI, started halfway through the Duolingo course, and about a third of the way through the first volume of this. I have absolutely zero previous experience with Latin, but I've fallen in love with it over the last few months. Not trying to impress anyone - it's a really paltry achievement - but just making it clear that I've seen what there is to see of the content.

I'm not sure if they count different forms of the same verb/noun as unique, but I would guess so. I've allegdly learned 536 unique vocabulary words out of a possible 750, although I'm not sure where the rest are hiding.

I have about 10k 'xp', I've been in the 'Diamond League' part of the leaderboard for a few weeks, and have used it daily for the last 123 days. I've just recently 'finished' the course, as in maxed out all the skills, earning 5 crowns in everything. I came to this subreddit looking for info on the Latin Duolingo course a while ago, and found various statements about it that at the time I didn't understand.

Duolingo latin reddit