There are many ways to make your devices more accessible. This page offers sources of guidance and useful apps that may be useful in your studies.
Device accessibility
General accessibility
Disability Services offer advice on learning support apps.
The Global Accessibility Reporting Intiative (GARI) website also has a list of useful applications.
You can filter or limit these by support for hearing / speech / vision / cognition.
The British Dyslexia Association also has a useful list of accessibility applications that may benefit a wide range of users and not just those with Dyslexia.