If you are just starting out, I would recommend going through all the available resources on the internet first. Tutorials and blogs are a good way to cover the fundamentals and it will create a smooth transition when you start taking Data Science classes. You will be well prepared for the advanced concepts without facing any difficulty. To help you get started, here is a playlist created by Intellipaat to help beginners like yourself understand the basics of Data Science from scratch and in-depth.
As a Data Science aspirant, you should ensure that the classes cover the following in detail and with enough practical work:
Data Visualization & Communication
Big Data Hadoop
Machine Learning and AI
Multivariable Calculus & Linear Algebra
Decision Trees and Random Forest
Association Rule Mining and Recommendation Engines
You can check out the Data Science training that is offered by Intellipaat. The course is carefully curated and designed by industry experts themselves who are willing to train enthusiastic learners such as yourself. The course comes with 24/7 learning support and placement assistance.