Is the screen good for outdoor or bright-room use?

The panel is IPS at 1920x1080 with a matte surface, which cuts glare and keeps colors stable at an angle. It is easier to read near a window than a glossy screen.

Can it run Windows apps like Office or Photoshop?

No. It runs Chrome OS, so you use web apps and Android apps from Google Play. Microsoft Office works through the web version, and full Photoshop is not available.

Does it have a touchscreen or a fingerprint reader?

No to both. The display is a standard non-touch panel, and there is no fingerprint reader or facial recognition.

What ports does it have?

USB-C, a 1/8-inch headphone jack and a microSD card reader. There is no optical drive and no SIM-card slot.

Is the Core i3 version worth it over a cheaper Celeron Chromebook?

The i3 gives more headroom for many browser tabs and smoother video. If you mostly read email and watch video, a Celeron model is enough; for heavier multitasking the i3 is the better fit.

How does it compare with a 14-inch Chromebook?

The 15.6-inch screen is noticeably larger and better for split-screen work and video. The trade-off is size and weight, which matter if you carry it daily.