golf lessons: 2 half hour session or 1 full hour?

Yes. Better to have multiple shorter lessons than one long one. That way you get all the meat and no fluff.

1

The easiest way to learn golf like a pro is by following "The Simple Golf Swing" program. It's primarily a 31 page eBook that teaches golfers how to make solid contact with the ball, how to avoid hitting fat, how to avoid slicing, how get more power, accuracy, and consistency in your swing. Consistency being the number 1 golf skill.

You not only get the eBook though, you also receive a ton of extra material including video, lessons on putting, driving, chipping, sand play etc. Here is their official site: http://www.golfswingguru.net/

Better to have the individual attention of a private lesson that of course will help you improve quickly and emphasize the fundamentals of a good golf swing. 2 hours would be enough for you to process what you learned and of course put it into practice.

my friend who is on the golf team for my school has had like four meets already. but yeah I would rather and probably will get two half hour lessons

It's up to you it's not like your gonna miss a putt on the last hole of a tournament because of improper distribution of lesson time. It's up to you and your schedule you don't need/want someone else telling you.