Turkey Tri = First tri

Welcome! I did a turkey tri once and it was not too competitive. There is always a fun atmosphere around the turkey-themed events. :-) Don't worry if you have to walk.

To improve running, I recommend:
1) Get a gait analysis. You can get a cheap one at a running shoe store that does video of you on a treadmill. Or get an expensive one from a physical therapy place.
2) Read Chi Running
3) Concentrate very hard on feeling what your body is doing. Harder than you think. If you can see your feet in front of you, you are swinging your legs too far forward. If your stomach hurts, you are probably slouching instead of pulling your rib cage up and keep your core tight.
4) Don't always run the same speed. Lots of beginning runners say they have "one speed." Do some very short intervals where you sprint a little. This will help you get a feel for your body mechanics when you have good form. At a slow job, you are usually sloppier and harder on your joints than when you are sprinting and everything is tight.