I'm trying to improve my critique (and as a consequence, my appreciation and understanding of what makes a "good" photo IMO) so please feel free to critique my critique or ignore it as you wish, I don't mean any offence by any of it
#1 is a little dark for me, there's a lack of context to where the trees stand. The dark area leads the eye to the path in the distance but I'd have preferred to have a hint that the path was there, otherwise you only see it when you look further into the image and for me that was on the second viewing as my first impression was to scroll past it. That might well have been exactly what you were intending, of course. I like the contrast to the light grass in the background and the image might not be as dark were I to view it on a decent monitor instead of this one at work, the constant bugbear of digital presentation which somewhat negates the desire to show the images SOOC. That could lead to a discussion on whether you could ever have a film image SOOC given that different developers have different impacts on the negative but that's a subject for elsewhere.
#2 is a very strong image, low grain, great detail and I like the flare from the right as it shows a window spilling light into the room, further enhanced by the shadow area over the books being where the edge of the window funnels the light. Tranquil, as you say above, and rather timeless. Pick of the set for me.
#3 is a good image with a couple of flaws; the positioning of the posts doesn't form a line leading the eye rather than a wall blocking access to the landscape beyond. Admittedly, that landscape does appear rather flat and lifeless but the later posts don't have sufficient detail to compensate for that. Expanding on that note, the zone of in-focus (must be a better name for that which I don't know) appears to end in the gap between the third post on the left and the next post along. I find that a little jarring, I'd have preferred to have the post after the gap in focus or the one before just going out of focus to provide a smoother transition.