Hey, weird tech question, but I notice you have a personalized Tab image that
appears when I have your site open in one of many tabs in IE. How does one go
about customizing tab images?
This is one of those questions that is hard to answer unless you already know the terminology used to describe what you’re looking for! The personalized tab images are called favicons. Basically all you need to do to create one is make an image 16 pixels by 16 pixels. If you can save the image in .ico format from your image editor, great! I created mine a long time ago, I think I downloaded a shareware program that no longer exists that I used to convert my image file into .ico format. There are also online favicon generators too.
I think it is a bit easier to add a favicon when you own your own domain, all I seem to remember doing was uploading the favicon.ico file to the root directory of my site. But I there are resources out there to tell you how to add a favicon to a blogger site. You will need to host the favicon image somewhere and add a link to the image in your blogger template.
If you want some inspiration, you can take a look at the favicon collection at Delta Tango Bravo.