this logo looks so clean. is this created manually by adjusting path or there is a trick? thx.
Make a closed path which has a few, say 3 or 4 nodes. Make a copy and edit its handles with the direct selection tool, beware moving the nodes!
Make a few step blend between these 2 versions, expand and ungroup the blend to get free objects. Move the objects so that the nodes fit.
Color with a gradient. Draw and insert the black dots if they really are needed.
The geometry part without colors is shown in the next example:
You can easily explore variations without sacrificing the smooth transitions between the curves if you put the 2 versions to the same place before making the blend. The blend adapts if you edit a handle or move the nodes.
You can also apply envelope distortion to the result. Here's an example of applying warp to the same shape: https://www.dropbox.com/s/n5l6jcwpqwzp44x/2Hunt1862.jpg?dl=0