Again thanks for all your help guys. Regarding the Partitive case I found this;

partitive case (plural partitive cases)
(grammar) A noun case used to indicate that an object is affected only partially by the verb, or that the effect is not real. It often corresponds roughly to the English words "some" or "any." It is similar in many ways to the genitive case. Some languages that make use of the partitive case include Finnish, Estonian, and Russian.

So when you say Я жду самолёта it implies that you are waiting for "a plane". probably has more of a place in the sentence, I am waiting for a bus, when your at a bus stop, and do not have a specific ticket for a specific bus??? Correct? (oh I just read what CoffeeCup posted. Thanks

In regards to using Genitive as some of something, on my program I came across the sentence "Номер его комнаты - двадцать два". but another that said "Его чемодан красный".

so Его is HIS. this is the genitive of Он. but Suitcase and Red are both in Nominative.

Now with room, it has both His and the Room in the genitive. Is it referring to Number of His room? and this is why both are in genitive. It confuses me as its hard to see the ownership of the room being his if both are in genitive.