ImageJ and Fiji (which is ImageJ packaged with useful plugins) are computer software you can use to scientifically analyze microscopy images.
How do scientists keep track of all the data they collect while doing their research? It takes planning and organization, but it will help you and your lab members save time later.
Get familiar with the system your lab uses to save files and data, and use it consistently. Here are some more tips:
Tips for naming files and folders:
Why bother with all this? It's because reproducibility is about establishing practices to organize and document your research.