Chess Informant Team: Tactic Workbook ChessWare if not most if not most but always backed up by Nunn's expert guidance to ensure that the lessons you take away from the book are correct and useful 5 levels of difficulty Informant’s Collection of Instructive Tactics and Studies
Ask which next step is appropriate if the available guidance is unclear. If the stated response period passes, follow the seller's published follow-up route.
Identify which details you can verify from the listing. Check whether a requirement depends on another item or arrangement.
Include the relevant order or inquiry reference when following up. Keep a record of when you contacted the seller and what you requested.