Different spins are good to get to know for each club. Comes in handy when you're in between clubs.
eg Just basic figures and depending on wind/elevation on green.
Nike (top Level) 6 Iron (180) with no spin 186 yrds... little b/spin 182.. Using full b/spin can be a bit dodgy with that club....lol
I use no b/spin with my Cle Wedges, but I do use t/spin to gain that little bit more yardage.
I also use slight b/spin off the Tee using driver when there is a Tailwind to gain a little distance and full b/spin with driver to get over Tree's and to try and stop ball quicker on fairway.
Just basic things I do. Different clubs, balls and how you hit your shots can be totally different.
-Roger