1. Always use the console/developer tools
  2. Read, read and read the documentation
  3. Before asking, read the issue’s description one more time 
  4. Don’t wait too much to ask
  5. Take a break when you’re stuck
  6. Value other people’s (and your) time 
  7. Don’t panic if something isn’t working
  8. First, master simple concepts and then build on them
  9. Keep notes on the things you know you’re going to forget 
  10. Make it work, then refactor it!
  11. Don’t be afraid to speak!!
  12. Each day you’re going to be improving!!! 

Please watch the video to get more details.