I was going to mention to be careful & not press too firmly on that stem release. A common mistake, especially when you are just starting out, is to press the release too hard, which dislodges the lever. The movement is not dead, but you will need to remove the movement from the case, remove the hands & dial & then remove the set lever, straighten (or replace) it if it is bent (most likely not) & then reassemble. This level of work may be beyond your tools & comfort level, so you might want to have a local (rep-friendly) watchmaker do the work for you.