Day two of c25k

I finished week one, day two of the couch to 5k program yesterday evening. It consisted of 60 seconds of jogging alternated with 90 seconds of walking. It was tough, but I finished it! I don't know if I believe that I will be jogging 3 miles in 9 weeks, but I am going to try my best. I have been looking for 5k races in the area for the time when I will finish my c25k program (mid February). I am excited to sign up and have another goal to work toward. I am hoping to recruit my friend Robyn to run with me. She is training for a half marathon right now! This means that she can run for like 60 minutes straight while I am hyperventilating after 60 seconds!!
I am having some trouble adjusting to the treadmill. I am always scared I will fall off or fly off the back (like I have seen on tv)..so I usually tense up my legs when I get on. I got really excited when I finished my last jogging interval and swung my hand down, knocking my iPod on the treadmill. I immediately stopped walking to bend down and pick it up, which would have been fine if the dang treadmill wasn't still running! Luckily, I was able to hop off pretty quickly and avoid any serious injuries. Are there secrets to running on the treadmill that no one has told me yet? Tomorrow I will be completing my first week of workouts! Hopefully I wont fall off or fly off!