Videos:

• All top tier bouts with English language commentary from NHK (also posted on youtube) NHK posts a video with English language commentary after a day, it will be linked here when they do.
• Top 10 bouts in the top tier (Makuuchi), with post-fight notes in English by Don Don
• All top tier bouts listed in Japanese with Japanese commentary by NHK: first half, second half
• Videos of the top half of the top tier listed in Japanese without commentary, posted by the JSA

More Info:

• all results from the JSA
• full schedule (without results) compiled by a fan site

Intro to Sumo

• introductory video
• more English-language videos at NHK’s Sumopedia
• the wikipedia article has a lot of great information including on sumo terms.