How do I use bitcoinjs-Lib?

Hello there, I'm interested in using the bitcoinjs-lib for cryptocurrency transactions. Could you guide me through the process of how to effectively utilize this library? Perhaps we could start with setting up the library, then move on to understanding the CORE functionalities, and finally explore some use cases. Are there any prerequisites or specific setups required before I dive into the coding part? I'm quite eager to learn and implement this technology into my projects.