I was initially excited to get a couple of 1001 questions books, but have found way way too many errors to trust any of the information I am not strongly familiar with. I called examkrackers and they pointed me towards their forum where official corrections are posted. There are none posted. Another quick call and they informed me to email them with my concerns and they would have someone review them. Honestly I don't have time nor am I getting paid to proofread their material. Are there any other similar materials from another company like these? Not really interested in passage based questions but more straightforward questions to make sure I understand the basics. Thanks!