After going through the Get Started section, you should have a basic understanding of AlchemyJ.
Next, you might want to know more about the AlchemyJ workbook and the modules within the workbook.
Alternatively, you can follow the development guideline to develop your API and further explore AlchemyJ.
In addition, you can refer to the Recipe Book where there are some "recipes" about the common usage of AlchemyJ.
There are over 90 Extended Functions provided by AlchemyJ. Here is the Index for your reference.