There are a wide range of teaching platforms like Udemy and Coursera, who offer Data Science related courses online with low pricing and even have free enroll options.
EdX (not affiliated) also offera free enroll options.
The courses are easy to follow and after completion, you have the option to pay for a certificate.
You will find many institutes like Microsoft and Harvard University publishing there courses on EdX.
Here is a short list of free Data Science related courses offered by EdX:
- Analyzing and Vizualizing Data with Power BI
- Introduction to Python for Data Science
- Data Science Research Methods: Python Edition
- Big Data Fundamentals
- Essential Math for Machine Learning: Python Edition
An overview of all Data Science related courses offered by EdX (including payed):
Also check out there math courses:
Happy learning!