There are lot of free vidios out there now. Do a Google & you see them. When I started in 1996, you had to buy these.
http://www.google.com/search?q=begin...=com.microsoft:en-us:IE-SearchBox&rlz=1I7ADBF&prmd=v&source=univ&tbs=vid:1&tbo=u&ei=SKKDTOOUFYLGlQf1teinDg&sa=X&oi=video_result_group&ct=title&resnum=3&ved=0CDMQqwQwAg