Where do I get my extremely basic questions answered?

I am a junior in college considering working in the merchant marine upon graduation. I know next to nothing about the job, the lifestyle, etc… This forum seems to be aimed at those considerably less clueless than I. Can anybody point me in the direction of a forum where I can have my very basic questions answered?
(I apologize if I posted this in the wrong sub forum)

Use the search function of this forum to avoid the pointy sticks. Type in “Read This first”. All will be revealed, young tadpole.

so in other words…go away now and don"t come back until ye are enlightened…little slug

Well I used the search function and wasn’t able to find the answer to this question: it’s my understanding that people in this line of work usually work 6 to 8 months out of the year. Is there anything stopping somebody who wants to earn more from signing on with 2 ships? One for the first half of the year and another for the second half?