Math is huge so how you approach this will depend a lot on your starting point and your goal.
Which branch of math are you interested in?
Do you need it for something specific to your career or is it just a hobby?
What's you current level - are you comfortable with high-school level algebra, trigonometry, calculus?
In any case, I second the recommendation for Khan Academy as a good starting point - not only for the range of content and Sal's silky voice, but also for their approach to learning: you get to practice topics until you "master" them instead of just watching/reading, maybe taking a test and then moving on to the next topic.
Which branch of math are you interested in?
Do you need it for something specific to your career or is it just a hobby?
What's you current level - are you comfortable with high-school level algebra, trigonometry, calculus?
In any case, I second the recommendation for Khan Academy as a good starting point - not only for the range of content and Sal's silky voice, but also for their approach to learning: you get to practice topics until you "master" them instead of just watching/reading, maybe taking a test and then moving on to the next topic.