Processing papers to get a visa.

hi i have a question...

i was applying at ohio, and i just had my interview last night through skype.. I think my employer is interested to get me.. She asked me what do i need to get there, i said i need a visa, working or immigrant visa.. I just knew that it is better if i choose working visa because it will only take like a year to process unlike immigrant will take several yrs. Am i correct?

what are the chances of having working visa? do i need or is it better to look for a lawyer to work on papers??? because my employer told me that it was their first time to hire a nurse from different country ( philippines) so it seems like they dont know yet what to do,, i wanted to give them information about these to help them. So anyone here pls help i will appreciate it.thanks

also, my license was endorsed to vermont.. what do you think are the steps to do next after i passed the interview?? i want to get everything done.. Thank you so much in advance