Steer, deal with buoyage and rules of the road, plot positions, handle emergencies. This computer simulation puts you to work navigating in conditions as different as the Exumas or Maine.
An active yacht club's manual for learning to sail and using the club's boats. Includes good introduction (no pictures) to charts, navigation tools, log keeping, chart work, setting course, fixes, and other techniques.
An authoritative navigational resource for voyage planning and reference underway. Includes detailed sections on navigation, weather, safety, communications, etc. Six editions cover the UK, N. America, and the Caribbean.
Here is the training, in detailed list form, needed to complete the US Sailing Coastal and Celestial Navigation courses. The organization also publishes manuals for these skills.
Plug in a your boats speed, time sailed, or distance sailed (pick two) and this page will predict your time of arrival, your speed of travel, or (with a known heading) your dead reckoning position.