When you're just getting started, one of the best tips I can give you is to proactively not develop bad habits. They are much harded to break and correct the longer you swing incorrectly.
There's been lot's of advice thrown your way in this thread. This is mine:
1) Make sure your initial lessons get you positioned with the proper grip and stance (weight balance, alignment, weight transfer, swing path, tempo, etc.)
2) Buy one of these....
Medicus Reviews And use it! Personally I like to warm up with the 5-iron model because of the weight and compact length. Some prefer the driver. I don't use it for actually hitting balls. You can probably save some coin an look for one on ebay. People with horrible swings will buy them, never be able to make it work, and quickly give up and sell. New or used, doesn't really matter (just make sure it is a dual-hinge model...the older single-hinge ones are not nearly as effective). Used, you might have to put a new grip on.
When you can reliably swing a Medicus club your long game will be well on the way to breaking 100. Just remember, your short game and putting skills become must more important once you can consistently advance the ball AND keep it in play.
I neither own Medicus stock nor sell the club, but I did stay in a Holiday Inn recently....
Oh...and HAVE FUN! Welcome to the game.....