There are no such things as "stupid" questions. However if you think your question is a bit stupid, then this is the right place for you to post it. Please stick to easy to-the-point questions that you feel people can answer fast. For long and complicated questions prefer the other forums within the support section. Before you post please read this
It is possible. Update at your own risk. Only level 1 & 2 updates from mintupdate are tested as safe. You will get opinions from both sides on this subject. Some users have applied all updates with no problems, while some start having a lot of bugs afterwards.
"The only thing necessary for the triumph of evil is for good men to do nothing." Edmund Burke
OK, my turn to chime in. You may have the greatest success with using mintUpdate and the default levels. As your skills grow with Linux Mint, you can then experiment with the more advanced methods of updating. Just my opinion, though.