How to install Ubuntu Linux on an Acer Spin 1 SP111-32N
The first thing you encounter is how to get into the BIOS. Hold down the little blue Fn key, and press F2. If you do this as soon as you press the power button, then keep pressing F2 a lot, it gets into the BIOS reliably.
In the BIOS, you don’t need to change the Secure Boot settings (yet). Just remember that you have to hold down the little blue Fn key to change the boot order with F5 and F6.
The live USB should boot up just fine. Do not select “Install ubuntu” from the GRUB menu. Let the default option start up, “Try ubuntu without installing.”