https://www.youtube.com/watch?v=7qQX6YGBQEA
overview tutorial

4 voices (oscillators): 3 wavetable and one noise/sample.  For any wavetable
you load, use the right elevator to choose where in the wavetable you want
to play.  The mix controls are on the left, the bottom selector let's you
choose where the output will go.  Activate filter 1 in the bottom left to
control a high pass or whatever.

The unison control on the right allows you to add multiple instances of the
voice with whatever detuning between them.  That gets you richer sound and
more stereo width.  The selectable dials hugely control other aspects of the
waveform being produced:
right: wave morph (squish, quantize etc)
left: spectral morph

Additional oscillators are most useful for layering.  Sample input is
typically used to add attack transients, or general grit so the wavetable
sound isn't too clean.

On the filter, Key Trk allows you to apply more or less filter depending on
the note you are playing, for example less filter for lower notes, more for
higher notes.

Bottom right controls are general.  Voices: amount of polyphony.  Vel Trk is
how much the synth responds to volume level information.

Effects are in a stack, drag to reposition as needed.
  
To apply LFO 1 modulation to something, hover over "LFO 1" until the 4
arrows appear, then click and drag it to anything green.  A circle indicator
will appear in the LFO 1 box allowing you to control how much control should
be applied.  The matrix tab shows what controls are mapped.  Can also use an
envelope to modulate with.  Or random movement.

Macro dials allow you change multiple aspects with a single dial.

A wavetable contains exactly one period of an arbitrary waveform.  It might
include 256 or 1024 single digital samples.  It is an an *extremely* short
sound clip so it is more of a tone than a recognizable source sound.
Basically it extends the palette of initial tones far beyond sine, square,
and sawtooth but works the same way as a classic oscillator.  Huge
possibilities for sound design, but it is a straight synth.