Tinkercad Basics
3. The Build Area or Workplane
The workplane isn't as simple as it seems at first glance, but once you become familiar with it you can use it to you advantage. Important things to be familiar with:
1) You can change the units (centimeters/inches) and workplane size by clicking "Edit Grid"
2) "Snap Grid" is useful in moving objects. It allows you to snap to a specific measurement, which you can change.