I think this is good news:

This is a whole new world, but I will continue to continue until I get all the books in the series on audio. It has been challenging but fun. 

I have submitted two recorded books to ACX. They are "pending audio review" which can take up to 30 business days. I will continue to produce my books, in THE STORY OF GLOPS series, for ACX. If something needs changing in the recordings, I now have the confidence that I can make the changes. I do not understand it, but I can do it.

Happy Independence Day! 
Happy 29th Anniversary to my husband! 
It's going to be a great weekend!

https://www.youtube.com/watch?v=bIUbR378w18 

​This has the best information of all in the Audacity to ACX videos!
 
ACX University: Setting Up Audacity: Part 4, Lesson 3
 
In Audacity, record in MONO, not stereo. Or save as Reduce to MONO.
 
Split screen for Audacity on left and book script on right, or for Audicity on lower screen and book script on upper screen.
 
Record narration. When you make a mistake, stop. Either record over it or start a new track to go back and fix it later. Use:
         Shift Z = undo
         Shift Y = redo
         Shift X = cut
         Shift C = copy
         Shift V = paste
         Shift K = copy all to end
         Shift J = copy all to beginning
 
Export Track as [filename]_raw.wav with Encoding: 32-bit (float)
 
Open Levalator
         Drag and drop [filename]_raw.wav into Levalator. Keep this file in case you need it later.
         Levalator will improve the file and make it much more even
         [filename]_raw.output.wav will be saved wherever the [filename]_raw.wav is
 
Remove the old track from Audacity.
Drag and drop the new [filename]_raw.output.wav back into Audacity. You can delete this file later.
         Select All (Ctrl A) and Effect >
                  Check Remove DC …
                  Check Normalize peak amplitude to Normalize to -3.0 dB
                  No check on stereo …
         Export as [filename]_final.mp3 with Quality of 192 kdps
because an mp3 file is what ACX wants.
Keep this file, also.

If you want to add sound effects, do it with this [filename]_final.mp3. When finished, export the narration and sound effects as:
         [filename]_final_wSE.mp3
         Bit-rate Mode = Constant
         Quality = 192 kdps
         Channel Mode = check Force Export to MONO
                  Click OKAY on next screen (It is about music.)
         Keep this file.
 
The [filename]_final.mp3 for narration or the [filename]_final_wSE.mp3 for narration with sound effects is the file to upload on ACX. ​

"So what is The Levelator®? It's software that runs on Windows, OS X (universal binary), or Linux (Ubuntu) that adjusts the audio levels within your podcast or other audio file for variations from one speaker to the next, for example. It's not a compressor, normalizer or limiter although it contains all three. It's much more than those tools, and it's much simpler to use. The UI is dirt-simple: Drag-and-drop any WAV or AIFF file onto The Leveler's application window, and a few moments later you'll find a new version which just sounds better."  (bold type is mine)
http://www.conversationsnetwork.org/levelator 

The opening screen in Audacity was rather intimidating. When watching videos from ACX University, or any other video on YouTube that explained Audacity, I soon began to see the screen as a digital recorder with controls similar to the old cassette players I owned "back in the day." 

ACX says that

There are all those terms and numbers that I didn't (and still don't quite) understand. My new friend, Wayne Hughes, understands, though. 
kbps = kilobits per second
MP3 = a way of compressing a sound sequence into a small file (much smaller than a wav file)
kHz = kilohertz, a measurement of audio frequency in data chunks per second
CBR = constant bit rate
room tone = specific quality of background noise during a live recording
dB = decibel, unit used to measure the intensity or pressure of a sound
dB peak values = maximum sound levels before distortion