You cannot learn it in 48 hours - its takes decades

You need a mentor, someone who can SHOW you. Who are you hunting with that they can't help you ?

Read what you can, but you cannot learn hunting in 48 hours. Heres my advice - enjoy the sunrise, the breakfast with your friends, the woodpeckers, the flocks of blackbirds, a squirell eating acorns, the calm of the morning, the smell of the wind.

If you DO get a chance at a deer, make absolutely certain of your shot before you take it- and when you DO decide to take the shot, make it.