Removing rear wheel advice

Hello.

I've got a Tern GSD S10 LX. I've had it for a year and done over 2000km on it and finally today I got a flat tyre.

Unfortunately it's the rear one, so it's looking pretty complicated to remove the wheel, which I will have to do so that I can change the inner tube.

Does anyone have any advice/tips or links that they'd be willing to share, before I get started with the help of YouTube.

Thanks.