Can't advise you on the hunting side as this will be my first season too.
As far as training goes, short 10 minute sessions are best, vary the different commands once you are sure the dog knows each one and keep him interested. If you spend too long training the dog will get bored, if he can't grasp what it is that you want and you start getting irritated then leave it til another day.
Always end on a good note and make it fun for the dog.
You got til around September to work on training so no need to rush it all in a week.
Best of luck