Start on EX 1-1. EX 1-1 through EX 1-5 is all a general tour of Excel. EX 1-6, step 1 is where you download the Start File from Mindtap and start working on the first textbook project that will be submitted. EX 1-18, step 7 is where you stop and upload your file to MindTap. The icon that says SAM with a red arrow peinting up tells you that this is the file you save and upload to SAM using the Expected File Name. Start on EX 1-1. EX 1-1 through EX 1-5 is all a general tour of Excel. EX 1-6, step 1 is where you download the Start File from Mindtap and start working on the first textbook project that will be submitted. EX 1-18, step 7 is where you stop and upload your file to MindTap. The icon that says SAM with a red arrow peinting up tells you that this is the file you save and upload to SAM using the Expected File Name