Watch these tutorials from https://www.youtube.com/playlist?list=PL2iXvgrJIzwa8GUky6MC-JhYUH7qNuYg0
Practice Simulating Mechanical Movements – Explore how different parts fit and move together using interactive simulations.
1. Click on the Settings button & verify computer number. 

2. log into Tinkercad. https://www.tinkercad.com/joinclass/WSWJXDARH Create account if you don't have an account in TinkerCad(<= 2011 birth year - asks for email, if age is 13 & above)
3. Click on the Start button & enter your admission number, pick a question.
4. After completing your design, click Stop and call the invigilator.