Despite what it seems to be from a distance, dog training doesn't need you to be a fearless Hercules, all it asks of you is to keep a few basics in mind. First, establish who the boss is, remind your dog again and again that you are the one on two feet while he is still on all fours, and thus what you say is Gospel and what he barks is not. Second, speak in a tone which oozes superiority, something on the lines of your first grade math teacher. Third, routine is everything so keep your training tactics consistent. Once you master these three techniques you will be the master of every single dog around!
Your heart might melt into a mush every time your cute little pup cocks his head, but don't let that get in the way of your establishing who the master is. Go gooey eyed too frequently and you are likely to pay with your carpets and sandals, which it will most merrily chew through. Treat your pup the way you would treat a little kid, setting it strict boundaries and letting it know what goes and what most definitely doesn't. Establish gestures like pointing etc. which will give the dog a cue to act in a certain way.
You might not think it possible but dogs, like your kids, can tell when you mean business, slacken up a bit with them and they'll know you can be taken for a ride. Interestingly enough they also have this instinct for intonation; be strict when you want him to stay put at the yard, but be enthusiastic when you are asking him if he would like to go for a walk. It's funny how you'll see your own mood reflected in his responses. This is the primary step for you to establish the kind of communication with your dog which will allow you to calm him or set him up for work with a single word.
One of the main methods of training your dog is to keep a certain consistency in your approach towards him. Keep your intonations, gestures and words for expressing dissatisfaction the same every time, so that he gets used to the idea easily. A young pup who grows up with a certain set of commands will respond to them more promptly than one who is frequently confused by conflicting orders. The more consistent your commands are, the better trained your dog is, the better trained your dog is the greater your confidence in him regarding his obedience to you. A few other ways of establishing consistency are to use the same door when taking your doggie out for a walk, give him the same kind of pat every night before retiring for the day, so that he knows exactly what time it is.
Little things like these will help you predict your dog's behavior more accurately. Most importantly, however, remember to shower your love and affection on the little one, continue your training through little games which he might enjoy, and remember to treat him every time he does a task well, after all like a child it too needs to be appreciated and given its bit of fun.