preposition hello guys relly i dont know the preposition im lose in this field please who want help me i promese i can teach u a very good spanish thanks !!!

my goal hello every body im so ecxiting because today im finish my training and tomorrow i will start my job in an american company i hope i can take the calls very well !!!

hello everybody hello its my first time here and really like it i wish improve my english because the next week im start to work in an american company and i need fluenci because all my co-workers have native english im so exiting to know new friends who i can practice my english