Great organization is your best asset for data management.
The most important step to organize your research data is having a system and using it consistently. You may choose to organize your data by the following, or use them in combination:
README.txt files are a recommended method to document your project and add context when clarity is needed.
You should use a README.txt file at the top level of your research project folder to explain the purpose of the research, the relevant summary, name and contact information for project researchers, general organization of your files, and copyright and licensing information. A README file will be crucial for another researcher or collaborator to understand your data - but could even be useful to yourself in six months or six years when you might return to a project.
Use meaningful names that are consistent, descriptive, and short.
A great way to meaningfully name files is to include the project, instrument, and the year, month, and date in the file name.