Where do you get your digital pictures from????

I am very new to this digital thing! I have over 300 pictures on my memory card. I've had it since June and tried to order pictures one time and from Sam's but I think I edited them too much or something they did not turn out good! Some one said they automatically get cropped? I dont want to take my card and sit at Walmart computer doing it. I want to do it from home, know how to do it and have good pictures.Help me!!!! I thought about Winkflash, Snapfish,etc, they are about 12 cents each. I want matte finish not glossy so Kodak is out. Do I edit them or just leave them??I am so overwhelmed!! I really don't like technology!!