I had always kept a spiral notebook to handwrite all of my notes from the garden each year, vegetables, figs, blueberries etc.
Last year I decided to start using Microsoft OneNote since I already subscribe to Office365. What I like about OneNote is that I can keep a running log of notes, insert photos, pdfs, internet links and even when I copy info from this forum a link back to the post is automatically included.
It has a really powerful search feature and the best part is that it automatically syncs to the OneNote app on my Iphone/Ipad and I can log in from any computer anywhere to post or update information.
What do you use?