I recently got a Wahoo Kickr Core indoor direct drive trainer. I already have a Garmin Fenix 5X and a Garmin 820. (I use Training Peaks for my workout information.) I have no idea what to do now. I guess I want to connect them probably using ANT+. Do I want to connect both Garmins to the trainer, or just one of them?
How do I change the resistance? Do I use the Wahoo App on my phone or one of the Garmins? Is there some way to make the trainer simulate one of the rides I did last summer based on data saved somewhere in one of the Garmins?
The goal is to find some way to ride the trainer and have something simulating a "real" outdoor ride: hills, changes in resistance, etc. I'm not at all sure how to do this, or if it's even possible. I don't really want to subscribe to Zwift or Trainer Road at this time. I'd rather just get on the bike and feel like I have the ability to control the resistance or that it's changing it in some logical way.
Are there Youtube videos, a website, or something similar out there I could learn from. My searching has found lots of videos on how to connect, but not what to do with them after they are connected.