Barrington Stoke have created this resource to support parents as they help young people with dyslexia.  There are generic strategies, as well as specific to age groups, including links to dyslexic friendly GCSE texts https://122985-351824-raikfcquaxqncofqfm.stackpathdns.com/wp-content/uploads/2020/05/BS-Home-Help-pack_FINAL.pdf

https://www.nessy.com/us/parents/dyslexia-information/6-ways-parents-can-help-dyslexia/

https://www.bdadyslexia.org.uk/advice/children