Hey Ornella, as promised a small introduction into the world of personal knowledge management (PKM):

• PKM helps us collect, classify, save, search, find, and share information
• By taking atomic notes and densely linking them we can come to new ideas
• There are many PKM tools available, each very advanced and functionality-rich in their own way
• The easiest, and cheapest, way to get started with PKM is by downloading Obsidian
• You may want to download their Windows app
• If you use a cloud service like Dropbox, you can easily back up your notes
• I think you may enjoy this article on PKM for researchers