If you dream of hitting a huge blackjack jackpot at one of the Las Vegas casinos by counting cards, you have to realize one important thing: you need to make it look like there is nothing but free drinks and one-dollar buffet in your head. Well, something like that at least. Casino management will ask you to go elsewhere, if they see or think they see you doing some calculations in your head. You need to be so great at it, that your brain would count stuff without it being registered with you and reflected on your face, and for that a blackjack card counting trainer is your best friend.
Most of such trainers that are available online, can help you learn different systems of card counting. You can indicate in settings what system you want to work on. If you are unsure of what to start with, then try the hi-lo strategy. It is considered to be the most straightforward approach, which is easy to grasp and great to use, since it is pretty effective, as well. You can also download a free card counting trainer onto your fave gadget, and practice anytime you have a free minute.