When I crochet (and all I know how to crochet are scarves, lol)....the corners curl up. How do I prevent this? And how can I make the ends frilly....like scarves you buy from the store? Do I just tie pieces of yarn through the holes at the end?

Cassie: Usually curling up is caused by tension being too tight, using a larger size hook (1 size up should do) will help with this.  I am not 100% sure what type of fringe you are thinking of but here is a tutorial for a curly fringe.  Hope that helps.

Cassie, when I make a scarf or an afghan and I want just a basic fringe on the ends, I cut lots of same size pieces of yarn, 
separate them into even bunches and tie them at even intervals between stitches at both ends.  Just be sure to tie them
on tightly.

Hi Cassie,

I know you posted this a long time ago, but I think I know exactly what you want to do. The long strings of yarn at the end, right?

1) Cut out a square piece of cardboard about the length that you want the fringe to be.
2) Put the end of the yarn at the bottom of the square and wrap the yarn around the square about 10 times. More or less will be up to you. If  
     you've ever made a pom-pom it's the same procedure.
3) You cut the bottom of the yarn at one of the square and remove the yarn from your cardboard square. Still having the yarn strings folded in  
     half.
4) Stick your crochet hook through the bottom of the scarf and pull all the yarn through at the "fold" of the yarn strings. Do not pull it all the way
     through. You will now have a loop of all your yarn.
5) Grab the loose yarn and pull through the loop made by pulling it through till it's snug. Have them all going in the same direction. You make 
     the tassels as close together as you like.

Hint: If you have ever tied two rubber bands together, it's the same concept. I really hope this is what you needed and I'm not too late with the help. I wish I could talk to you. I'm much better at explaining myself verbally.