i dont really understand counting the cards very well like you posted... what does it mean lol
You just keep track of the cards that have been played. Anything under nine gets a minus one anything over a nine gets a plus one. You keep track of the aces on your foot. You go from your pinky toe, to your heal then the left side of your heal then up to your big toe. Aces count as a negative two. When you have plus ten or above bet. You do this because the house has to bet and you don't, so they are more likely to go bust by taking a card.
In other words you know that there are a bunch of high cards left in the deck and that they will have to take a card and with a bunch of high cards they are likely to go bust.
And Yes if you get caught you will get shown the door. However, if you have a partner it's easier because you take turns at it, so it's not so obvious.
ps. How it works with a partner is that you have to wait until the end of the decks for the odds to really work. The casino will catch you if you sit there waiting till the end to place a big bet. So with a partner, you just give them a signal to sit down and bet once the odds are against the house. they come in place a big bet and walk out like they are just a lucky noob. So the person counting cards doesn't make the big bet and doesn't get caught.