I am going to start with my classroom library and how I have set it up so that my kids can shop for books. This idea from Erica at Sprinkles to Kindergarten and I used Reagan's Book Bin Labels to label my buckets and books.
I sorted all my books my theme or concept. Since I have so many books there were some categories that I had to group together. In cases where I did not have that many books in a theme or concept I grouped them with another theme. That is why the bucket in the middle has two labels. The apple bucket is waiting on another label to be added to it.
Then I added the same label to the shelf so that my little ones would know where to put the bucket back when they were done shopping.
Finally, I labeled all of the books in the bucket with a label to match. One more way of ensuring my little ones get the books back in the right place when returning them to get new ones.
I have categorized and labeled all of my picture books now, but I still need to do the same for my leveled readers. Reagan's unit has labels for leveled readers too and it has been a HUGE time saver to me to have everything already made.