The Views menu in the top navigation bar controls the display format:
In the moving Bubble Views:
-- Clicking on any Bubble will show the Details associated with that sphere and also any downstream spheres connected to it.
-- The size of the bubbles show relative importance. The arrows show relationships and the thickness of the arrows shows relative importance.
-- Click-and-drag the bubbles to move them around (to make them easier to see).
To move the whole map click-and-drag the board (the background).
Yellow rectangles indicate links to other maps or cross-links within maps. Use the buttons at the bottom of the map to move back/forward along your exploration track.