Creation of Big datasets

Hi folks.

Hope You all are doing greats.
I have a query that I am wanting to make a dataset upon which I could work on. But I didn’t have any past idea about it. After searching related this also I didn’t get a clear picture . So if any one have idea on how to make big datasets please share it. If possible share some reference of courses or any sources related to this . It is highly appreciable.

Making your own dataset is complicated and expensive.
You can download datasets for free from many online “machine learning repositories”.