This LibGuide will help you to find data you need for your research. It has general information on translating your research question into data requirements, and gives information on useful sources for specific types of data.
You should not expect extensive manuals for specific data sources here, although there are links to documentation and manuals where available. Use this LibGuide to decide which data sources could be useful for your work, not as a manual for how to work with those data sources. If you have questions on how best to organize your data, how to combine different data sets, or other questions on working with data, you may find the Libguide on Working with data useful.
This LibGuide is designed for students writing empirical research papers, such as bachelor's or master's theses. However, the information in the guide can also be useful for PhD candidates or more senior researchers.
Given the nature of most of the databases mentioned, this guide was written with students of economics, finance, or organisation in mind. Of course, the information presented here can be useful in other fields as well!