Play money is just a waste of time. You should just keep learning and changing your game till you can start cashing in some free rolls. Once you can do that, play for a week or two as your schedule allows to get a few dollars and move to low buy in games.
Keep working on your game till you can start cashing in the low limit games and slowly move up little by little.
There is no easy or free way to learn poker. You can spend your time studying and playing free rolls, you can spend your money and get a coach, software, and use small buyins, but it is going to cost you something.
__________________
|