4-String Bass Scales and Modes

(It should be interesting for the beginners)

4-String Bass Scales and Modes
"The Ultimate Scale Reference: Everything you need to know about all the scales, including every mode of every scale, in every key, in all the popular tunings. Scales are shown on their instrument and in standard notation. Also show are all the chords that sound good with the scale. You can listen to any scale, and for fretted instruments, you can click any note on the low string to display the patterns for all the hand positions..."
http://www.musicopedia.com/scales/4-bass.php