diff --git a/Ancientgreek_surgical.md b/ancientgreek-surgical.md similarity index 100% rename from Ancientgreek_surgical.md rename to ancientgreek-surgical.md diff --git a/designing for people.md b/designing-for-people.md similarity index 100% rename from designing for people.md rename to designing-for-people.md diff --git a/don norman.md b/don-norman.md similarity index 100% rename from don norman.md rename to don-norman.md diff --git a/Guishan_Dingxiang-fengShui.md b/guishan-dingxiang-fengshui.md similarity index 100% rename from Guishan_Dingxiang-fengShui.md rename to guishan-dingxiang-fengshui.md diff --git a/IPhone_1st_Gen.md b/iphone-1st-gen.md similarity index 100% rename from IPhone_1st_Gen.md rename to iphone-1st-gen.md diff --git a/personal computers.md b/personal-computers.md similarity index 100% rename from personal computers.md rename to personal-computers.md diff --git a/workspace efficiency.md b/workspace-efficiency.md similarity index 100% rename from workspace efficiency.md rename to workspace-efficiency.md