I start to record here Canon G5X tips for myself and for anyone interested. I will update the article whenever more becomes discovered.

Keep your camera protected against dust and moist

Pocket camera bag This is useful tip for any "pocket camera". Use so called reclosable plastic bag (zipper bag) to protect your camera against dust. 1/2 litter (0.13 gallon) plastic bag is just perfect for most of the pocket cameras. To slip the camera in and out of the bag is surprisingly easy once you get used to it. You can also use the plastic bag as a small "umbrella" when shooting in rain.

Keep your camera handy

A hand strap for a pocket camera This is also an useful tip for number of cameras. Get rid of the neck strap and replace it with a wrest strap. That makes your camera much easier to handle. I often slip my hand through the wrest starp loop first, and then take the camera out of the overcoat pocket. A long neck strap only makes the manouvering of camera very clumsy.

Display switching off every now and then

Right next to view finder, there's a sensor that switches the live view between the display and view finder. Even partially covered, the sensor does that switch. I first thought my display connection is breaking. Solution: Set the menu 'Setup 1 > Display settings > Display Control' for Manual.

Setting display mirroring off

In case you are not a big fan of selfies, you may wish to switch off the display mirroring. Solution: Set the menu 'Shoot 1 > Reverse Display' to Off.

Digital zoom

When I bought the used camera, the previous owner had left the digital 2x zoom on. Solution: On P, Tv or Av modes make sure the menu 'Shoot 3 > Digital Zoom' is set Off.

Use the touchscreen!

Somewhat everything becomes easier thanks to the touchscreen. I'm currently learning where all that makes things easier. I will update my find findings here later on.

Carry an extra battery and memory card with you!

For any camera it is a good to carry along an extra battery and memory card. But especially Canon G5X is known for a short battery life. So, buy an extra battery and carry along also the external battery charger with you.

Acknowledgements

Thanks to John (Stormlizard) for the battery and memory card tip.