Here is a list of web resources to help you get started on your learning theorists research:
Adler
Ainsworth Ainsworth
Bandura
Bromfenbrenner
Bruner
Bowlby
Dewey
Erikson
Freud
Froebel
Gardner
Gesell
Hall
Harlow
Hollingworth
Horney
Jung
Kohlberg
Kohlberg biography
Locke
Lorenz
Malaguzzi
Mahler
Maslow
Mitchell
Montessori
Pavlov
Pestalozzi
Piaget Piaget
Rousseau
Skinner
Thorndike Thorndike
Vygotsky
Watson