Here I am organizing some advice on the basics of sound design. This page is in progress. If there is a particular sub-page that you urgently need information on, contact me and I'll try to update it quickly.
Audacity homepage: https://www.audacityteam.org/
Audacity manual: https://manual.audacityteam.org/index.html
basic audacity tutorial:
Audacity tutorials provided in their documentation: https://manual.audacityteam.org/man/tutorials_for_audacity.html
quick guide: https://zoomcorp.com/media/documents/E_H4n_Pro_QuickGuide.pdf
manual: https://www.zoom.co.jp/sites/default/files/products/downloads/pdfs/E_H4nSP_0.pdf
h4n pro, intro on how to use: https://www.youtube.com/watch?v=xAFsAAVBoC0
article with advice on setting up the zoom with one mic: https://www.sam-mallery.com/2020/07/how-to-use-one-microphone-with-the-zoom-h4n-pro-and-tascam-dr-40x/