Regarding your three bulleted points:
– In comparing the validation errors for the main page of the blog and the “Two Different Paths” category page, the main page has 38 errors, and the category page has 118 errors. From the original validation list you sent me the link for, the items for lines 100-103 are noting errors for the html from a WordPress add-on (links to Facebook, Twitter, etc.). Those errors repeat for each instance of the add-on. The error for line 165 (bad value category tag) is referring to html from the template footer. That error repeats as well for every instance of the footer (at the end of each blog). That error also shows up on the main page of the blog. The errors for lines 1007, 1018, 1019, and 1063 are contained in the html for the side column menu, part of the template.
– I have printed out the source code for both pages to compare, and have looked at the html code in the WordPress editor. I can correct the errors that appear in my text, but how do the errors in the template footer, menu, and add-ons get corrected?
– Removing the final </div> from the first article on the category page, caused the right column menu items to appear at the bottom of the page instead of the top of the page.
I will continue to correct the errors in my text. I’m at the end of my work week, so it will be sometime next week before I can report on the end result of that exercise. Thanks for all your assistance.