How to be a good playtester for others:

http://www.genesisoflegend.com/2014/04/episode-32-playtester_for_others/

SEE ALSO: The 5 W’s and 1 H of Good Playtesters

http://cardboardedison.tumblr.com/post/81674512127/guest-post-the-5-ws-and-1-h-of-good-playtesters