From what I understand, RS would be difficult without a real grammar to give you information just like what you are asking about. Infants learn by rote, but once you're grown up a bit, you need more than that. Gromozeka gave you a start with the three genders in Russian -- Masculine, Feminine, and Neuter. Look in the Learning thread and you will find some suggested textbooks. OTOH rote is not bad -- I still remember from my first year Russian class where we had to memorize a Krylov fable that starts Волк из лесу в деревню забежал, не в гости, но живот спасая. I'd guess that a lot of folks here know this one.