Signal analysis is the course I wish I had taken, but is one that civil engineers will very rarely find in their curriculum. Some good tools related to this topic already exist on my FFT Tools page. Many more are available and will be added here in due time.
A good resource addressing sampling and aliasing is here: https://www.audiolabs-erlangen.de/resources/MIR/PCP/PCP_08_signal.html
Anders Brandt, at Aarhaus University in Denmark, has published some excellent resources at http://abravibe.com and in his textbook Noise and Vibration 2nd Ed. (Wiley, 2023)