Thanks for the compliments.
Like you, I find visuals the best first step in getting concepts.
Did you see my second expanded version, It's here showthread.php?t=15279
When ever you find yourself re-reading a paragraph it's due to a misunderstood or mis defined word. Carefully go through before you became confused to discover that word. Define it with a dictionary, use that word 3 times in different sentenced then re-read what your studying. You'll be amazed at the difference!!