That is what we are here for!
Below is a video I recently made about Rate mode vs Heading Hold. It will explain what each of them are.
You only want to fly in Heading Hold which is any number, in the gyro menu, above 0. I suggest starting out with about a 45 on that Tx.
Make sure your channel is set to 5 or Gear in the gyro menu in your Tx. Channel 5 and Gear are the exact same thing and Gear refers to airplanes Hence it's name.
Once you have a switch assigned that you like (it's up to you what switch you use), then set a position to +45 for Heading Hold. Then, set another position with something like -35 for Rate mode so that you can center your blades before takeoff. All you have to do is flip the switch down, then back up and you are good to go.
Here is the Rate and HH mode video.
Rate Mode vs Heading Hold Mode Explained - YouTube