Not so much a training tip as a useful way of "jotting notes down"
I often see what look like potentially interesting links posted to Twitter on my phone when I'm on the move. However, I often don't have the time/bandwidth/inclination to click the link when I notice it. So, I use the favourite function on Twitter to favourite the tweet and subscribe to these favourites as an RSS feed.
The link is far more likely to grab my attention sitting in an RSS reader than it is sitting on a favourites page on Twitter that I never visit.