At the moment it is hard for me to save some money because my paycheck is hardly enough to cover all current expenses. I have something invested, like little savings, but I hope this will improve in the future. I would like to have some nice sum of money or Bitcoins that I would keep for raining days and give me some more security.
But still you can try to save at least 5% of your salary on regular basis and if you can manage to do that then you will be holding descent money over a period of time.
5% of salary is really low,15% will be better because if you targetting this low then you will never holding big money in future