The first question to ask yourself is why you want to learn mathematics in the first place. It is an extremely serious undertaking and requires substantial long-term commitment over a number of years, so it is absolutely imperative that there is a strong underlying motivation.
In mathematics we always assume that our propositions are definite and unambiguous, so that such propositions are always true or false (there is no intermediate option).
The goal is to introduce you to contemporary mainstream 20th and 21st century mathematics.
This is not an easy task. Mathematics is like a giant scaffolding. You need to build the superstructure before you can ascend for the view.