Hey Izer thanks for that and your kind comments in my sketchbook. I think you've been doing a great job teaching yourself and it looks like we are both interested in the classical side. I'm basically teaching myself as well and I spent a lot of time on the Fine Art forums here. I look for sketchbooks of members attending ateliers. Thus far I've come to the conclusion that doing a master study is the 1st step in this approach. They all seem to use a envelope approach to lay in the main outline and large shapes. This is all done with straight lines at first. Simplify to least amount of straight lines and then breaking those lines down, and on and on until we have the curves. Step 2 is to work out the shadow side from the light and draw in a line around these shapes. Step 3 is to render the shadow side ignoring the half tones. Step 4 the half tones are rendered. I'm only on step 2 and struggling but I can see how this trains the eye. It is a slow process though and I spend a lot of time looking, thinking, making a mark then rubbing it out. LOL
Here's a couple of links to YouTube which explain it better I think:
I'd never done anything on landscapes before so the books I got were:
1. Drawing Scenery: landscapes and seascapes by Jack Hamm
2. Drawing Landcaspes in Pencil by Ferdinand Petrie
3. Landscape Painting by Mitchell Albala
So far I've found the common thread in all of them is to simplify what you see down to simple shapes and masses using a few values. You can start of by doing this with photo's like I did and then of course you need to go outdoors. That's as far as I've got but I have found that this also is a good approach for drawing anything.
I don't want to witter on too much in your sketchbook but please feel free to PM with any questions you want to ask about books and a like. I'm a bookaholic so I do own loads and I'm quite happy to talk and share my approaches.