I would like to learn about the signal flow, and then the modulation, effects,... Where could I read more about it? Is there any threads that will help with basic knowledge?

-- baygiooday

JB's advice is on point, if you want to read on it even more, there's plethora of knowledge to be gained in the stickies here: https://modwiggler.com/forum/viewforum.php?f=16

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