Brain regeneration - book recommendation
Neural regeneration is addressed broadly in this chapter from a book published in 2013 (though I would say for a topic such as this, you're probably going to want to read primary literature or recent, less comprehensive reviews in addition to any book chapters published in the few years):

Neural Regeneration by Melissa M. Steward, Akshayalakshmi Sridhar, Jason S. Meyer, published in New Perspectives in Regeneration.

The chapter includes two sections on stem cell therapy and one section on reprogramming of somatic cells to neural lineages.