Skittering and Syntopic reading are not covered in any other courses I know of. I recommend checking the updated PhotoReading book (4th edition) and the more recent PhotoReading course (not the tape version) for more on Skittering.
Syntopic reading has an entire chapter in the PhotoReading book.
As for reading up other books on reading and speed reading. I prefer the topic of reading comprehension as they offer better reading tips than most speed reading books which are drills.
Alex
