Revolution slider won't work

Please help! Ive been watching videos ALL day long hoping that it is user error but everywhere I try to past my slider code into a page i get this message. I have created new sliders and tried those as well. I just installed yesterday. thanks!

Revolution Slider Error: Slider with alias please not found.

Maybe you mean: ‘Main page slider’ or ‘please work somewhere’ or ‘please work today’