I have done a lot of practice with my camera. I started with a rebel T3 and grew out of it after about a year and a half. The quality of the images just wasn't there. Here is an image that I feel came out descent. I do understand how to adjust my settings in relation to increasing ISO for a brighter image with having to compromise the clarity. I understand that if the shutter is too high then the image may come out dark because of the time allowed for light enter the lens is short. My original question was simply for some pointers to a learning photographer. Some pictures came out blurry which I now realize is probably due to camera shake. I definitely need to work on the ease of my trigger finger. The other question was why one picture comes out with great exposure and the next consecutive photo would come out way under exposed. (I'm assuming it's due to me possibly zooming in closer to the subject?)I get a lot of usable images, but want to figure out why I experience these issues, (knowing full well that some of them are due to inexperience). In this picture you can see where the gentleman's face and little boy's face are clear while the female's face looks a little blurry? My goal is to be able to take great photos without much waste. I don't want to just point and shoot. I want to be creative, try new things, step outside my box, and make something great. Again, thank you to everyone who contributed to the answering of my questions.