Python could a good choice as you re a transaction analyst at a crypto exchange.
To learn Python, you can start by downloading and installing the latest version of Python from the official website (https://www.python.org/downloads/).
Once you have it installed, you can start by reading tutorials and guides online, such as those available on the official Python website (https://docs.python.org/3/tutorial/index.html), or on sites such as Codecademy (https://www.codecademy.com/learn/learn-python) and Coursera (https://www.coursera.org/courses?query=python). Practicing by writing code and working on small projects is also a great way to learn Python.
Additionally, you can also join the Python community and ask questions on forums like Stack Overflow (https://stackoverflow.com/questions/tagged/python).