support and teaching of power bi, dax and mdx

i am a consultant with clients for whom i have to develop professional dashboards, i have been using power bi for about 2 years and i speak average english, i am looking for a person, with an average level of english, who can:

- teach me advanced dax
- know the sql language to eventually extract data into excel files
- know excel
- be available for quick questions, i.e. if I need a measure within a couple of hours, even just an advice on how to proceed
- can be reached quickly via a message (whatsapp, messenger, ...)
- support me on the development of professional dashboards
- know the mdx language
- have knowledge of best practices on how to implement a complex project
- teach me complex functions, context transition, filter context, row context with many examples
- know how to import, transform and create ad hoc tables for what I need
- have many exercises to give me
- know how to use tricks/workarounds in case something can't be done in power bi
- I am looking for a long collaboration, months, in order to schedule a weekly plan