N walks 10 m to the West, turns left and walks 10 m, and again turns left and walks 10 m. Which direction is he facing now?

Deepa moved a distance of 75 m towards the North. She then turned to the left and walked for about 25 m, turned left again and walked 80 m. Finally, she turned to the right. In which direction was she moving finally?

At 6:00 PM in the evening, while sitting and reading in a library, light was entering through a window on the wall to my left. If the main entrance of the library faces East, in which direction was I facing while reading?