To quote from an earlier post of mine on this subject:
". . . I try to always give it a good descriptive file name. If you have multiple pages or photos all connected, put them in their own folder, also with a descriptive name. That way if for some reason you don't go back to finish the project, someone else will know what it is. I have a lot of photos un-captioned, but the file and folder names tell most of the story."
For genealogy, I set up folders with the surnames of my great-grand-parents. That is 8 folders plus a Misc. Then you can add sub-folders or special topics as needed. I don't depend on a particular program to keep track of the files, just Windows. That way, also, these files are automatically backed-up with everything else. No extra steps needed.
You could always copy the genealogy stuff on to a thumb drive or memory card to take with you, if you can't lug the whole computer around.