The kind of questions I would ask someone with experience in construction. "If I want to remove plaster from walls, which tools should I use? What should I do

The kind of questions I would ask someone with experience in construction. "If I want to remove plaster from walls, which tools should I use? What should I do with the debris afterwards?" "Which kinds of cavity wall insulation exist? Will this cause moisture problems in my house? What can I do to detect or prevent these kinds of problems?" "Is it useful to insulate interior walls in an old house? Or should I just focus on the exterior? Will interior wall insulation raise the EPC (energy performance) of my house?"