This advice-column-style blog for SLPs was authored by Pam Marshalla from 2006 to 2015, the archives of which can be explored here. Use the extensive keywords list found in the right-hand column (on mobile: at the bottom of the page) to browse specific topics, or use the search feature to locate specific words or phrases throughout the entire blog.
Q: I am looking for oral motor exercises that will teach and promote chewing. My client prefers a diet of soft foods that he can form into a bolus with his tongue against the roof of his mouth and swallow whole without moving the food to his molars and cheeks.
The best book on the topic is: Morris, S. E., & Klein, M. D. (2000). Pre-feeding skills: A comprehensive resource for mealtime development, 2nd edition. Austin, TX: Therapy Skill Builders (Harcourt Health Sciences). A used copy of the earlier edition (1983) is also excellent and will cost you less.
In addition I would look for a continuing education course to take. Consider the classes offered by Sara Rosenfeld Johnson and Lori Overland through Innovative Therapists International out of Tuscon, AZ.