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Help Beginner with ZB3.5 zsphere sculpting please

Hello,

I am completely new to 3d modelling and sculpting.

I am hoping for some tips/pointers to enable me to draw with zspheres.

I have found some tuts but they do not describe what I would like to learn; I would like to be able to have full x,y,z control over where and how I draw with the zsphere tool; for example, sculpting alien tendrils that are waving in all directions, at this time ZI can only seem to follow previous surfaces I have drawn - I would like to achieve the freedom of x,y,z control where the ztool draws.

Any pointers are welcome, thanks