it takes off now but spins in circles and drifts to the left, I tried trimming but slowed the process down.
I've watched the video but the that's the newer model mine doesn't flash green an red just red only why I've been struggling to get it calibrated.
I give it another go little later

It should calibrate every time u bind it to tx on start up. If it's just a small drift that gets a bit worse over the flight time then that's just the hubsan I'm afraid. You'll never get a quad minus compass and a gps fix to stay in one place, it will always drift a bit.
when you start it up do you switch tx on, place quad on level surface, connect battery, leave quad still for few seconds before take off? If u connect battery with quad in your hands it can cause similar problems to what you're describing.

Hold the left-hand stick down and to the right,
Then with the right-hand stick do a left to right movement fairy quickly.
The lights should flash on the hubsan to say it's been calibrated.