International Playbook 96 Sets great read.

VIA Dan Kiser's coaches club

96 Sets thanks to Dwight Williams

Great diversity in sets that will work for most teams.

Newsletters

I really like the Xavier Basketball Newsletter, this piece about the packline defense is great!
They got it from University of Washington, so I guess this is 3rd hand info, but still great info.
I've seen this defense in practice make top 10 teams seem vulnerable.

PackLine Xavier

Here are few more drills from Travis Steele, Xavier Assistant

Xavier Drills

Another good one from X with drills and box sets from new assistant Ashley Howard.

Xavier Box Sets