We’re currently preparing a larger collection of book and online resources for learning MRS (to be released within the next month). Until then, I would highly recommend Robin de Graaf’s book (I can access it for free through our university subscription, maybe it works for your institution too?). Robin also has a great lecture series on YouTube called “The Basics on In Vivo NMR”. If you want to learn the theory a little deeper, James Keeler’s “Understanding NMR Spectroscopy” course (all free PDFs!) is a great resource.
Stay tuned for more, we’re just putting the finishing touches to it…
Cheers,
Georg