Root Help new root user

[Njbrodeur87]

Hey everyone I just rooted my phone using sholes updater. I have 2 questions. My first one is how do we get updates to the current rom we have installed. Is it over the air?...n my second question is what's the difference betwen the different roms. I installed the one that came with sholes updater but I hear slot of talk about others...any difference?

Thanks
Carlos