[altairiumblue]

The best places to start for a complete beginner are Precalculus and Hello-World in C.

I'm serious about this. Ultimately the job is just software development plus statistics.

If you are a software developer, work on your statistics.

If you're a statistician, learn to program.

Most people will have gaps in both of these sub-fields.

Do not, under any circumstances, take any online courses that include the phrases "data science" or "machine learning" in the title.