i have a sprint mobile sanyo and i really need help please help me 10 points?

[Mir S]

ok my question is i have a sprint cell phone and i just buy the new one and somebody kept sending me the messege. i dont have the messege plan on it and i want to so is a ok if i send messege to my friend after 7 because after 7 clock if free to call anybody so my plan is only tal to share plan i only have to call so is ok to text smbody or not after 7 clock. and another question is about the message my freind told me that i get 300messages for 5dolles its ok or not and how do i get the plan from i cant go to the store because my dad dont have enough time so please help me thanks