Mistic Zenfold

I just came back to SL and when I was first here I honestly didn't stay more than a day. This time around I became a premium member. I am at a loss as to were to go to get the 512s2 land. Do I pay for it, who do I pay. Where is it located. I really want beach front land but I can't figure out how to search for it. I seriously need someone to hold my hand thru this ordeal. At this point buying a house in RL is a lot less scarier... Anyone have anything that can help? Please remember you are talking to a total newbie here. I seriously have no idea how this works I haven't even figured out how to put my dang shoes on yet:/ Anywho any help or advice is very much appreciated. Mistic