It is painstaking but you can do it. Open a blank page in your word processor.
Open the web page walk through
Click on the top printed line while holding down your mouse (left click) and drag it highlighting the text and stop before the picture. While highlighted click copy under the edit tab in your browser.
Paste that into your word processor. That way you are going to copy text only.
Continue that process through the walk through omitting the pictures.
It is painstaking but it can be done.
If you highlight the picture they will copy.
Once you get a text only copy in your word processor it can still take a lot of pages.
You can then make a second file with the pictures only without printing for a quick reference in case you need to look at it to get a better idea of what you need to do.
Once you have a complete walkthrough in your word processor you can then index your saves. Simply type the save name or number on the line in the walkthrough where you made the save. If you ever need to use a save when replaying a pain in the neck section of the game you know exactly where that save is.
Ok so with that said knowing I keep all my saves in a folder on a back up drive I almost always forget to index the darn things and then complain because I don't know which saves goes where. Yeah I have thousands of saves and can hardly tell where they belong in the game. You can tell by this advice is cheap