For your profile picture, it is best to upload a perfectly square picture. Otherwise the software usually centers the picture and crops it for you. This usually results in cropped heads, especially for tall people.
If you want a great easy-to-use free photo editing tool, and one that I have used for years on my CheyenneJackShots Photos
you can use Googles Picasa photo editor at the link below.
Picasa Download Site
Feel free to respond with comments below on other site issues you are having, and I will try to address them for you. I'm hoping to have more tutorials in the future covering some of the same topics I cover at CheyenneJack.com
like RSS Feeds, Social Bookmarking with Delicious, StumbleUpon, Mahalo and others, but will keep it focused for using The Tall Street Journal.