Your young age bodes very well for you if you manage your condition correctly. Lungs can heal some if the scar tissue is not really bad. Your in a acute phase, and if you get the right treatment and do the right things, like never smoking again, you will improve considerably. Many folks live near normal lives with COPD by careful control and correct medications.
While I agree you need to learn lots please make sure in this acute phase that your getting lots of fluids and rest. Do not sit up in front of your computer stressing this. You have a lifetime of learning ahead of you as medicine never stands still. In the next while you will be put through many tests and get more information on exactly how effected you are. Let the information come to you at first. Once you can breath better gradually increase your levels of activity. Again, this is an acute phase, and it will get better than this, your steriods are going to get it under control for you if you get the rest you need.