As JL and Ron have said, the Raph book is great. He covers every aspect of swing figure you can imagine.
And you can use his tips to improve your sight reading of other material as well.
It's training your self to read ahead in the longest phrase you can.
When you read printed words out loud .... you are not looking at the word you are saying .... you're reading a whole sentence.
The same thing applies to playing musical notes.

Jimmy.