This should get you started and like everyone said you'll need to read
the manual for the proper commands.
Also try and name your posts better
SETSCREEN 640,480,1
//declare the variable to hold the text entered
GLOBAL Val$ = ""
// Declare a variable to hold the message
GLOBAL Message$ = ""
// Repeat until escape key is hit
WHILE KEY(1) <> 1
PRINT "hello TYPE IN your name! and press ENTER" , 100, 100
PRINT "Press ESCAPE key to Exit." , 140, 120
PRINT "Press BACKSPACE to clear text", 120, 140
PRINT Message$ , 140, 200
PRINT "ENTER YOUR NAME: ",60,220
INPUT Val$, 190, 220
ReadInput(LCASE$(Val$))
SHOWSCREEN
WEND
FUNCTION ReadInput: Val$
SELECT Val$
CASE "caleb"
Message$ = "you are a genius in math!"
CASE "bonnie"
Message$ = "GET THIS BOOGER OFF OF THIS COMPUTOR!!!"
CASE "noah"
Message$ = "your lucky,15 bonus kredits!"
CASE "ian"
Message$ = "baybie boodie boo!"
CASE "bethany"
Message$ = "are you the one that paints murals?"
CASE "james"
Message$ = "i cant beleive that you work in georgia!"
DEFAULT
Message$ = "you are an unauthorized user."
ENDSELECT
ENDFUNCTION