Easiest for a newb is spreadsheets.
Did you ever learn about MS Excel ?
Google Sheets is quite similar.
And for the fact about storing images, you can use KIO4's Base64 extension.
Then you would get a string value for an image that you can store in the database.
Also, whenever you want to retrieve the image, you can use the extension to convert the string to an image again.
For name : Something normal and easy to store.
For Co-ordinates : store in a string in a single cell or store as numbers in different cells(better option).