Charlie Parker's Omnibook for C instruments.
It would be too overwhelming for you if you don't know your fingerboard at all. It's transcriptions of Charlie Parker's solos (saxophone). Written in treble clef, no tabs.
A problem with exercices is they are repetitive, the same thing over and over up and down the neck. It loosens your fingers but don't learn anything. Playing real music will loosen your fingers just the same except it doesn't follow a pattern so depending or your reading level or ability to transcribe, it only takes a little longer to figure out. Charlie Parker's book is excellent since it has nothing to do with bass. There are no pattern and it's full of weird fingering.
The best thing to do is transcribe music. Figure it out and write it down in standard notation.