Hello, Ann and welcome to Librivox!
Two of the four sections you mentioned have already been claimed, but I can reserve Sections 9 and 11 for you for one month. This will give you the time to complete your one-minute-test, which we recommend, before you start recording anything in a project.
The test's purpose is to check that your technical settings are all up to LV standard. You can read all about it here: https://wiki.librivox.org/index.php?title=1-Minute_Test
Please post the test in the Listeners Wanted forum: viewforum.php?f=21 and someone will check it and give you feedback or advice if needed.
As soon as the test is ok'ed, please post the results back here, and then I can assign you the sections officially.
A good practice is to install the Checker app on your computer. It is used to check the technical settings of your recordings, including the volume. It can be found here, along with instructions for use. https://wiki.librivox.org/index.php?title=Checker Its three general outcomes are "PASS", "FAIL", and "PASSED WITH WARNINGS". A "FAIL" probably means the tech settings are wrong. A "PASSED WITH WARNINGS" probably means the recording is either too loud or too soft ... when this is the case, the MP3 can be easily fixed using the MP3GAIN app, which you should also install on your computer. It can be found here... https://mp3gain.en.softonic.com/ Set the Target Normal Volume to 89.0, run a Track Analysis, then if it's not 89, run a Track Gain, and it will adjust your MP3 file to approx 89. Very quick and easy.
If you have any questions, please don't hesitate to ask.
Good luck with the test !