Start by teaching 'sit' command. Use treats to lure the dog into sitting position. Reward and repeat until they understand the command.
Move on to 'stay' command. Ask the dog to sit, then say 'stay' while holding your hand up. Reward for staying put.
Introduce 'come' command next. Call the dog's name followed by 'come' in an excited tone. Reward when they come to you.
Practice 'down' command by luring the dog into a lying position with a treat. Reward and repeat to reinforce the behavior.
Teach 'heel' command for walking on a leash. Hold a treat by your side and say 'heel' as you walk. Reward for staying close.
Consistency is key when teaching basic commands. Use positive reinforcement and short training sessions for best results.