What fresh hell is THIS now? - Patrick Lauke
[tiffy23] Hello @sophieschoice_slack! Have you had a look at the courses by Google? They offer quite a lot of resources:
https://developers.google.com/training/
https://analytics.google.com/analytics/academy/
https://www.thinkwithgoogle.com/intl/en-gb/marketing-resources/programmatic/google-digital-academy/
https://learndigital.withgoogle.com/digitalgarage/
https://www.udacity.com/course/web-accessibility--ud891#
There are also free courses at https://www.codecademy.com/
I would focus on HTML, CSS, SEO, UX and accessibility. In my opinion you don't need in-depth knowledge of JS or PHP as a consultant, although I - as a full stack web developer - always love working with people who have a good technical understanding. It sure helps with communication! :)
So doing a basic course in some script language or programming language would be great too!
I hope my suggestions are of help to you! :)