DEFINITIONS:

LIST The thing you're looking at right now. Stores rows, fields, and views.
ROW A single unit of data in a list, a row!
FIELD A value a row may have, there are many types of rows (date, number, text, etc)
VIEW A configuration of a list that tells you certain things about that list. Stores groupings, filters, goals, graphs, etc. Make a lot of these.

HINTS:

General
Importing Paste ( ⌃/⌘ + v) the new rows into the first new rows field
Saving Ctrl / Cmnd + S ( ⌃/⌘ + S ) will save everything or clicking on the saving state in the right corner.
Save Your View Click on the + next to 'unsaved view'. Every change to the view will be saved.
Scrolling
Click To select a row
Double Click To edit a row
once a row has been selected...
Up Arrow (↑) Scroll up
Down Arrow (↓) Scroll down
Right Arrow (→) Scroll right
Left Arrow (←) Scroll left
Ctrl/Cmnd + Arrow(↑/↓/→/←) Jump to that side
Return (⌅) Open / Close Editor
Tab (⇥) Next Field
Shift + Tab (⇧ + ⇥) Previous Field
Navigation
J Pages the data left
K Pages the data right
Ctrl / Cmnd + S Saves Everything