convert C code file to hex code file link:
http://www.engineersgarage.com/forums/8051/how-convert-c-code-hex-code-using-keil-compiler
C code to asm code using keil
http://www.engineersgarage.com/forums/8051/c-code-assembly-code
please do specify which all more tutorials you need in keil so that i can send you the links for that