How To Drill Hard Steel Video

Hi, Im 27 yrs old and a rokie about drilling metal surfaces.
This weekend I'll try to drill a 5/16" into my jeeps body frame (I'm installing side step bars) I just saw the video and i didnt know that oil could help a lot.
Are there any special steps to drill a hole this big into a jeeps frame (91')?

Greetings,

I need to drill some 1/8th inch holes into 3/4 inch mild steel bar stock with a drill press...I was wondering if there are any extra precautions when drilling through such thick steel?
thank you for the great video and site.