You, click on the "Show Printable Version" entry after you click on the "Thread Tools" button, up at the top of the forum page when you are reading a post.....it will open in plain text, it's basically an easier way to print.... that is the only way I would know of to see the thread material in text with no pictures, ads, etc.
As for the other thing you asked about, probably it was directions for you to save the webpages as an .htm file onto your hard drive.....offline browsing etc.
At the top of the window, under the File tab, click on Save As.....either way, single file or entire webpage.....save to my documents or any other folder....when you click on it, it will open just as if you were actually here reading the thread. However....it will stay as of the time and date you saved it, so keep that in mind, it will not update itself.....
When you click on "Save As...." down in the middle line , click the drop down arrow...... one entry there to save the file as, is
Text file , which may explain the first part of your question....?
There are some freewares posted in the thread that deal with saving webpages..... you might be able to use the Search feature of our site to find that post, or just leaf through the posts....there are 120 pages, I know. You just have to learn, and you should Bookmark or place in Favorites, pages that you want to save....
After you find the right utility to make clips or excerpts....of webpages, you will be in better shape...I used to to use a few....clipboard enhancers, excellent for saving odds and ends of text and links from webpages....
Here are some>>>>
http://www.nonags.com/nonags/clipb.html