In my other life of teaching, we did a qualification similar to the ECDL but geared to the needs of the classroom. I even have the certificate to prove it! The problem is that when you are not doing something regularly, you inevitably forget how to do it, so Excel remains pretty much a closed book to me these days, although I did have a nodding acquaintance with it at that time.
Today, I was compiling a list of addresses to use for a new mailshot but, of course, I needed to put them on labels for the envelopes. I vaguely remembered doing something similar last year for the children's name labels on their exercise books.
"Nothing to it," I thought. "I should be able to remember how to do that."
After some hours of looking up reference notes, retyping the addresses into Excel from Word, etc. because I'd forgotten that's where they needed to be, I was successful!
It did occur to me that during the time spent completing this little exercise, I could have hand-written the envelopes at least 10 times over! A steep leaning curve! :)