I'm recently out of a two year relationship with a girl who is deaf and also have an aunt who is deaf so ASL has been in and out of my life for a long time. As many other people have stated, spending time with somebody who already signs and is willing to sign with you is the best way but having additional resources can be great so that one person doesn't feel responsible for teaching you everything.
My aunt sent this series of videos to my family 15 years ago or something and I remember them being a very good introduction to conversational ASL. I also recently did a course online at
