How to start preparing for data analyst role?

Hi everyone, This post is for one of my friend Who is pursuing MS in data analytics and planning to start prepare for my interview. Please guide how to start prep for the data analyst role. Any channel or links to prepare for SQL, python,tableau, ML. What kinda questions he can expect for this role ? Thanks in advance ! #apple #deloitte #walmart #sap #microsoft #google #amazon #facebook #workday #uber #lyft #oracle #salesforce #doordash #tesla #dataanalytics #data #datascience #usa #bayarea