Blinking hand and exclamation point- less focus

If it's an exclamation point inside a triangle, it's called a master warning symbol. This is the Master Warning Light symbol. If this light is on, there will likely be text displayed as well on the instrument panel, or another warning light. Look for text in particular. It could very well point out something as serious as low oil pressure. If the engine is not running, you can't very well check your gauges, but you may have lost all oil pressure or overheated the engine. Recommend you consult a mechanic familiar with your model.

I'm curious what's with the blinking green light..I happened when I'm on a cruise of above 80kmh..

Could someone help me on this

That is a tire pressure warning symbol. Please read the owners manual for more info on this. Have the tire pressures checked and if ok see the dealer.

That symbol means that the printer cartridge door is open.

A yellow explanation point symbol on the dashboard typically applies to the Tire Pressure Monitoring system. A thick ! inside a half drawn flat tire symbol to be complete and comes in yellow color when lit. Under normal vehicle set-up, if this indicator stays lit after the power-on selftest, you need to check your tires for any uneven pressures and adjust their pressures to correct specifications. Okay? : )

A red exclamation point inside a circle when lit indicates your parking brake is on, or your brake fluid level is low.

Since your question is listed as a 1999 Saturn SL and a Toyota 4Runner, I will answer both:

1999 Saturn SL
Typically the orange exclamation point dash warning light is indicating a problem with your brakes, parking or hand brake. Check to ensure that your emergency brake is completely disengaged.
Check to ensure proper brake fluid level.
Otherwise this could be indicating a problem with the ABS system.

04 Toyota 4Runner
Low tire air pressure. Inflate to approximately 32 PSI should correct your problem.

I hope this helps.

Point and shoot cameras automatically auto focus. The video symbol looks like an old hollywood movie camera with the film spools on top.

That exclamation light on the dash board indicates low tire pressure. Check the air in all your tires and make sure they are all filled to proper levels and it should turn off.

I just looked it up in my manual, and the exclamation mark with the waving hand means: 'There is a strong likelihood of camera shake because the shutter speed is slow.' The remedy to this is: 'Use flash photography. However, use a tripod for some scenes and modes.'

It sounds like you need to adjust your shutter speed. I'm no expert and I consult my manual often, so if you need any assistance doing this or anything else, feel free to ask.

That sign tell you the camera is "out of focus".
If use the manual mode, use a trypod or change to automatic mode.