Anyway... last time I talked about nouns and adjectives. Since then, I learned a lot :-) I learned the possessive pronouns, which also change depending on the gender of noun following it. For instance, if you want to say "my brother," since the noun "brother" is masculine, you need to use "můj" for "my." If you want to say "my sister," since the noun "sister" is feminine, you need to use "moje" instead. The same rule applies to yours (singular), ours, and yours (plural and formal) as well.
The í-verbs (e.g. rozumět = to understand) change like this: (I)-rozumím, (you)-rozumíš, (he/she/it)-rozumí, (we)-rozumíme, (you-plural)-rozumíte, (they)-rozumí. The regular e-verbs (e.g. pracovat = to work) change goes like this: (I)-pracuju, (you)-pracuješ, (he/she/it)-pracuje, (we)-pracujeme, (you-plural)-pracujete, (they)-pracujou. Once you remember the rules, they become easy. The hard one is the irregular e-verb. It is irregular, so you just have to remember (at least the how it changes with "I"). For instance, číst (= to read) will change like this: (I)-čtu, (you)-čteš, (he/she/it)-čte, (we)-čteme, (you-plural)-čtete, (they)-čtou.
It is much easier for me to write than speak of course, but even then if I want to say "You have a beautiful cat," you have to determine 1) cat's gender, 2) then which form of adjective to use depending on the gender of cat, 3) the form of verb - whether it is á-verbs, í-verbs, or e-verbs, 4) subject, 5) change the form of verb based on the subject, and not to mention changing the noun and adjective to the accusative form. In this case, it shall be "Máte krásnou kočku (given the assumption that the cat is a female cat or its gender unknown)." Whew!