ThorfinnFrisken has given you some good advice.. You may want to check your holding posture. Beginers tend to roll the guitar so that that they can better see where they are putting thier fingers. This limits your reach to the 6th string.
Heres the link back to the lesson
http://www.guitartricks.com/lesson.php?input=13958
You may also want to get your fingers and wrist warmed and lose.
Finger execises are here
http://www.guitartricks.com/lesson.php?input=12294
My guitar selection advice would be to get as few scales and chord under your belt and then try as many guitars as you can. I think you will fine something that will feel like the right one for you.
Good luck and happy pickin'