Check reviews on this and other boards. Avoid the massage places because the only thing you'll walk away with is a very light wallet vs quality of service. Stay with the SP agencies, Elite (my preferred agency) or Temptation and Diamonds. When you contact them mention this is something new to you and the type of lady you prefer and if they have any recommendations. Legally they can't say the services they offer. I'd suggest look at the agency sites and see which ladies you prefer and when you discuss with the agencies about the ladies say something like "I prefer a slim, petite lady who's ok with DFK (or LFK), BBBJ (or CBJ), DATY and possibly CIM".
Hope that helps. And all of us will wait to read your first review. Good luck and have fun.
LTO_3