There is no well-defined time to start learning the use of Bitcoin every day is the right one.  On the net you will find a lot of material to start with but also here on the forum.  I advise you to search among the podcasts and see if there is something in your language, otherwise if you can understand English there are many well done ones.  The important thing is that you understand that Bitcoin is not an asset to speculate on but a means of peer to peer payment.