Richard Feynman said "I think I can safely say that nobody understands quantum mechanics."  Some else who I can't recall said something like that anyone who says they understand QM is a liar or an idiot. 

Also QM says nothing about anything having free will.  Some philosphoers and mathematicians have claimed that the indeterminism of QM suggests freewill.  However many systems, even simple ones can only be modeled by statistics.  This does not prove freewill.  We may just not fully understand all of reality to rule out unknown factors. 

QM describes the behavior of sub-atomic particles and the systems they make up.  What it says is that Bosons and fermions (particles of matter and force) require the presence of an observer (or rather more specifically to be measured) to exist as the measurable particles we know and love, otherwise they exist as waves, the distribution of these waves (the term wave is used loosely here) and their physically measurable properties (as waves and/or particles) are represented via the Schrodenger wave equation which can only state the probabilities of certain forms and properties "manifesting themselves" once measured.