Hi anons.
I'm giving you a trick in learning any inflected/conjugated language. (or even agglutinative, because it's similar).
You need one thing. WIKTIONARY.ORG.

As an intro for those who don't know, with Declinable/Inflected/Conjugated/Agglutinative languages it's so often that nouns and verbs often have multiple classes and each class has its own rules; firstly you have to check how many classes are there, and then pick one to start.

And even within a class too there likely will be 'untold' "sub-classes", that is, things that behave erratically and different than you expect. But whatever. You'll just bulldoze it first and move on (you'll discover 'explanations' later in life).

Let's start. I'll use LATIN as example.

Pick a class. In this instance, https://en.wiktionary.org/wiki/Category:Latin_second_declension_nouns

Then a random noun/verb, in this case, the word "abacus" https://en.wiktionary.org/wiki/abacus#Latin

Start with any part of the word. Nominative singular. Ablative plural. Whichever. Doesn't matter. Alright, you picked one, look at the word, read the word, preferably physically. Okay, what's next?

Go back to the word class. https://en.wiktionary.org/wiki/Category:Latin_second_declension_nouns. Pick another word. And again, pick the SAME part of the word. You picked dative singular before, you also read dative singular of this second word.

Keep repeating this process until you feel like you quite "know" that specific part of the word class, and feel BORED with it. If you stumble onto strange irregularities, GOOD, that's part of what you want. Just move on and repeat the whole process with another word.

Then start adding another word part. First you might start with Nominative Singular, then after you spent time with that long enough, recite Nom. Sing. WITH Nom. Plur.
Then, again, do this long enough, you add the third part. Then the fourth. You might even will want to drop the first or second after you reach fifth or more.

You will know when you have familiarize yourself with a part of the word/word class.

The key to the method is SAME part, different WORDS, over and over.
NOT one word and memorizing multiple parts and then move on to another word.
That was my mistake. And that might likely be the mistakes of people who are new into this sort of languages (fusional/agglutinative).

If you ever start to think nouns are child's play, just try the verb. https://en.wiktionary.org/wiki/censeo#Latin

Again, pick one part of the verb, (I rec 3rd present) and repeat it with other verb of the same class, over and over. Then add other parts.

Yes, you can, and should use, this method with even modern languages like Spanish and Arabic (their verbs are conjugated)
or even Turkish or Japanese (agglutinative languages, tacking on new stuffs onto base word, but this method SHOULD work similar because fusional languages (Latin, A. Greek, etc) are supposedly 'theoretically' originally somewhat agglutinative in ancient far past but the agglutinations all melded strongly onto the base words overtime, thus became "fusional" languages; but anyway, the method SHOULD work the same, I'd say even easier, because agglutionations are often easier than fusional)

Btw it's recommended to NOT start with pronouns. They often have irregularities.
If a wiktionary page says the noun/verb HAS IRREGULARITY or strange ways of behaving, immediately skip to next different word. You want to memorize regular things WELL first before tackling weird irregularities.

These languages often have classes that just behave QUITE strangely without clear seeming logic (in Latin this is 3rd class nouns and 3rd class verbs), you will know when you find them, and when you do you just bulldoze them, repeat the method over and over UNTIL you "feel" the pattern for all those words. You will develop a certain intuition and feelings for them after gobbling some amount of words, and then read up on the "rules" of those strange non-logic word formations. Then come back to the process.

Remember a thing. EXPLANATION LATER. FAMILIARITY FIRST. When you start becoming familiar with a word class, then read up on the strange rules on forming them, then come back and repeat the process with the newfound pattern rules.