as long as the weather isnt bad its not any more scary than your usual first day on the 121 job. My first day of IOE was ric-ord, ord-oma, oma-ord, ord-mke, mke-ord, ord-sbn. I went from crashes and dashes at an uncontrlled airport one day to ORD three months later. It was a little never racking but I wouldnt say it was scary, my checkairman was like "just do exactly what I say when I say to do it. and if your confused about a taxi clearance, just say your call sign and I'll take of it"

Alpha goes this way, Bravo goes this way, ORD sucks!