This video teaches the basics of playing the Dota 2 mod Battleships. A remake of several Warcraft 3 mods put together by radar, Frood, WeAreAllBritons, borgel, and zentrix. This video has updated items visuals and introduces the trading element.
Thanks very much to Amadeus2490 for creating the background music.
Battleships Tutorial Reborn (Dota 2 Custom Game)