I want to bring my fiancée from Thailand to Guam on a K-1 visa. What steps do I need to do to have the documentation pkg by immigration lawyer.

If you are a US citizen, you can sponsor your fiancé for her k visa. Generally a precondition is that you must have physically met your fiancé within the last two years. Once the k visa is issued, your fiancé can enter the US but you must marry within 90 days. Then you can adjust her status to get her green card.A well documented application  by an immigration lawyer assures the best chance of success