I am probably premature on this.
1. I went to www.pjrc.com/help, but found no info on 3.5/6
2. Plugged board into computer and have orange LED blinking at 1 Hz.
3. Using Arduino 1.6.12 and "boards manager", I found nothing on any teensy board.
4. May I humbly suggest a separate topic for 3.5 &...