To practice card counting at home, start by learning the basics of a counting system like Hi-Lo and practice counting through a single deck, adjusting the running count as you go. Once you're comfortable with one deck, increase the difficulty by using multiple decks, and focus on calculating the true count by dividing the running count by the number of decks remaining. Use card counting apps or timed drills to improve speed and accuracy. Practice adjusting your bets based on the count, and simulate distractions to build focus and stamina. Regularly assess your progress and gradually increase the complexity of your practice sessions. Consistent, focused practice will help you count quickly and accurately under casino-like conditions.