Can anyone tell me how to get this kind of vector line drawing from a photo? I'm beginner and can't find any answer. Thanks in advance :)
The image that you're showing is actually a hand drawn sketch and not a filter effect so unfortunately there's no easy way around it.
You can create similar effects using filters on photo's but never that good.
You could also try using the Threshold tool
Image>Adjustment>Threshold and adjust the settings until you get an image you're happy with: