I was going to ask you I.A; why you have to be soo mean, but I guess he asked for comments, and yours are valid one's.
My 2 cents are;
(First page)
1. The color image, is not overlapping the background image and so you get a feel of, who made it; just need to centre it, or just remove that color image, and have the back-ground of that page color.
Aside from that, well done.
(2nd page)
1. Didn't need to know who made the book, we know who it was from the first page. (Simple removing of this line would help)
2. Try and line the text a few mm under the image, and not have the text split between the two. (Realignment is simple I guess)
3. If you really want to have your name here, just put it in one of the bottom courners, in smaller font if you wish, but digression is the name of the game.
(3rd Page)
1. The first thing that popped out at me, was the font alignment, shouldn't be in the middle, that sort of work is what we do in grade 3-5 to try and look cool and make it seem like we used more words.
2. Need to split the background image from the color image, as well as make the color one a tad smaller, and less multi color (Just work out how to cut the background image of that page so that just the text lay's inside, then have a small gap for the color)
3. As stated above, try and not have the text go in and out of both image and white, its quite distracting.
(4th page)
1. Text I wont get into, But don't be scared to use brackets to state what the image is, its easier to read normal font inside a pair of brackets, then the slanted font.(and as stated above)
2. If wanting an image there, try and avoid a conflict of imagery, by either removing the background, or at least line it so we cant see the background
(5th page)
1. For people with bad eyesight, how will they know where you placed the extra bus-stops (Sure if you zoom in, but a simple yellow box at where, would help)
2. The image does not match up with what you are saying, (Maybe getting a better image would be of fitting, say split image of a town, and in the other image, two towns apart but joined by 1 station)
(6th page)
1. All comments stated above
(7th page)
1. Your signals though simple, are kind of irrelevant when stating about the direction, last I looked and even your image here, has no proof of the direction arrow on top.
(8th page)
1. Moral, think it through (All comments are stated above in some for or matter)
(9th page)
1. No real need to have this page here, if you used smaller fonts and less bold, the top line could of been added to page 8 (With the 1st image from page 8 to line up with the text)
(10th page)
1. Avoid using words like "I" and "my"; its giving the impression that you are the only one who does it this way (Simple changes of words, like;
"As" said before;
We’ll start off by looking at some passenger lines; They are fun to build and can earn a lot of money (Spot the changes)
2. With the image, you didnt need the "This is my HSI-C Ice line"; you could of just stated
(An High-speed line) (mind you, the viewer has no real idea on what it's a high speed compared to what? (add another train if you wish, having to give way to high speed ICE, maybe have a cargo train giving way)
(11th page and 12th page)
1. "I’ll say now: Everything here is my opinion, and how I do things. It may not be the best/only way, but it’s worked for me so I’ll
share it." (We knew this part, as your the creator of this book page 1 and 2 have this.)
2. the 11th and 12th pages could of be joined up by removing the named trains, and by stating what the graph means.
3. Text and wording need's some work (As stated above)
(13th page; unlucky)
1. You are stating an high-speed line, so why would we ignore the stations along the way; wouldn't a quick ro-ro image (SMALL) of how it still remains high speed be worth wild?
(14th page)
1. You are using different signals in this image, and so what you stated on page 7(Signals), become irrelevant, as you now have 3 set of two way signals on a straight path (Try and keep as much continuity as possible even with images)
(15th page)
1. How was the station in the shown image, different when it wasn't working? (Just a split image of the before and after, with yellow boxed marking out where the changes have happen)
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Okay, I have a few more to say, but its getting late.
Well done on starting it, and we do know its a W.I.P. so keep on at it, after all, we never stop learning.
I'll also add; remove the smileys from the book (You know, the...
:0 
)
And the Mod pages are not needed, could just add in context pages Where mods can be found, Websites only; or if its going to stay a web book, then quick links to the sites could be done there.
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So that's my 2 cents; can I get some change now?
Attention Grabber :!:There's two - one that is old, but I don't like how it is set out so I am making a newer version. Here you go:
