If you are going to do Triathlon's and don't have a coach or anyone else to critique or compare your efforts with, then for the cycling part, just look on RideWithGPS, Strava and any other site to see if anyone at the event might have posted their ride for the public to see. Then you can assess whether your cycling is where you need to concentrate much on.

If you have friends or made acquaintances at the event and you also are on RideWithGPS, Strava or other, then see if they are also and will add you to their friends list or if there is a group you can get on for that site so you can see the rides of others doing that type stuff.