I was searching for a good method book to gain better sight reading skills. I've found really a great one. David Motto's "Essential Sightreading Studies for Electric Bass" in 3 volumes is worth the money you'll spent. You don't even have to wait until the book & CD comes to your mail box, if you order it as a pdf & MP3 download.
This is my go to resource for students who want to improve their reading skills - It is best approached Away From The Instrument (AFTI) - i.e., clapping or singing the rhythms, before adding notes/pitches/hands/fingers/etc. Internalization of, and recognition of, the written text, and then being able to sing or tap that rhythm, is the first tool in the toolbox of reading (any kind of) music. IMFO, of course, as always. {} {}