Here are some educational articles and research studies about the vestibular system that we found interesting and are freely available on the internet (in no particular order):
The Human Balance System by the Vestibular Disorders Association, with contributions by Mary Ann Watson, MA, and F. Owen Black, MD, FACS, and Matthew Crowson, MD
Role of somatosensory and/or vestibular sensory information in subjective postural vertical in healthy adults by Junji Nakamura, et al in Neuroscience Letters
What is Vestibular Weakness? by Richard L. Pullen, Jr. in Nursing Made Incredibly Easy
The balance of feelings: Vestibular modulation of bodily sensations by Elisa R.Ferrè in Cortex
Vestibular stimulation on a motion-simulator impacts on mood states by Lotta Winter, et al in Frontiers in Psychology
Visuo-vestibular contributions to anxiety and fear by Carlos Coelho and Carey Balaban in Neuroscience and Behavioral Reviews
Postural threat differentially affects the feedforward and feedback components of the vestibular‐evoked balance response by Callum J. Osler, et al in the European Journal of Neuroscience
The critical role of vestibular graviception during cognitive-motor development by A. Le Gal, et al in Behavioural Brain Research
7 Components for Effective Balance Training by Lori Diamos for Athletico Physical Therapy
Tai Chi and vestibular rehabilitation effects on gaze and whole-body stability by Chris MacGibbon, et al in the Journal of Vestibular Research
Balance Training Enhances Vestibular Function and Reduces Overactive Proprioceptive Feedback in Elderly by Isabella Wiesmeier, et al in Frontiers in Aging Neuroscience
Aging of the Human Vestibular System by Christopher K. Zalewski in Seminars in Hearing
Perspectives on Aging Vestibular Function by Eric Anson1 and John Jeka in Frontiers in Neurology
Age-Related Vestibular Loss: Current Understanding and Future Research Directions by Dominic Allen, et al in Frontiers in Neurology
Sensory overload and imbalance: Resting-state vestibular connectivity in PTSD and its dissociative subtype by Sherain Harricharan, et al in Neuropsychologia
Dissociating vestibular and somatosensory contributions to spatial orientation by Bart Alberts, et al in the Journal of Neurophysiology