As has been efficiently demonstrated by the various posters in this thread, everybody learns differently. Many people have said that they learn best on their own online, others need formal lessons, and another group learns from people. Personally, I am one of those old-fashioned types who has to take notes upon notes out of textbooks or listen to teachers talk (when possible) to get a good grasp on what is being said. I have only learned thus far out of a classroom environment, so teaching myself from textbooks should be a challenge.
Think back to your non-language education in school. How did you learn things the best? Were you better with teachers whose curriculum involved copying vast quantities of notes off of the board, or educators who mostly talked, watching videos, reading silently, or a combination thereof? If you honestly cannot remember, I suggest that you take a test, online or proctored by a professional, to determine which style suits you most effectively. Online, I found a few questionnaires on Google that you could use:
[x][x][x]Then again, you might be none of the methods they mentioned; personally, I learn best through both writing
and making a song out of things.
whee I hope this helps, and good luck!