How are you opening multiple tabs?
What is the order they are opening in?
What is wrong with that order?

New tabs should open at the end of the tab strip, unless they are "related" to the page you are opening a tab from; then they open up to the immediate right of the current tab. That can be changed so that all new tabs open to the far right, at the end of the tab strip.
Type about:config in the URL bar and hit Enter.
If you see the warning, you can confirm that you want to access that page.

Filter = browser.tabs.insertRelatedAfterCurrent

Double-click that preference to change the value to false

Thanks for such a quick reply!

"New tabs should open at the end of the tab strip, unless they are 'related' to the page you are opening a tab from; then they open up to the immediate right of the current tab." Yes, this is what happens and I love this feature. I dont want to change this part but I do want.... (see below)

How are you opening multiple tabs? I use my mouse's wheel most of the time.

What is the order they are opening in? They always open on the right, such as: A, B, C, D, E, etc...

What is wrong with that order? Its ok, but sometimes I would rather it open as E, D, C, B, A. It might seem counter intuitive, but I just wish that I had the option/choice where I could change this setting.

Thanks Edmeister! ^_^

If you are opening a folder of bookmarks with a middle-click, the loading order should match the order they appear in that folder. As far as changing the order they load, I'm pretty sure that it could be changed with an extension, but I don't know of a particular extension that has a feature like that.

Very rarely do I open a folder of bookmarks. Too bad that you dont know of an extension to address my issue. Thanks for all you help tho.

Some tab related extensions that you can look at:

• Tab Utilities: https://addons.mozilla.org/firefox/addon/59961
• Tab Utilities Lite: https://addons.mozilla.org/firefox/addon/tab-utilities-lite/
• Tab Mix Plus: https://addons.mozilla.org/firefox/addon/1122