Registration is now open for the Hydro Dynamics Season. This year, will need sign into the FIRST website and you will then be able to register a team. Use: https://login.firstinspires.org/core/login?signin=b85b977e7a748fccb1419cfb5f852c64
If you are new to FIRST LEGO League, you will need create a FIRST login and you can do that here: https://my.firstinspires.org/AccountManager/Account/Register
Build Instructions for the Hydro Dynamics Field Set are here.
For the Hydro Dynamics Challenge Information: http://www.firstinspires.org/robotics/fll/challenge-and-season-info.
For challenge updates and resources, http://www.firstinspires.org/resource-library/fll/