Moving rows from multiple worksheet to one master sheet.

Hi I am starting a tracking system for a company, and I need some help with macros. I have no idea what I'm doing so do me a favor and speak in Layman's terms please! My problem is that there are like four employees with differnet workbooks to keep log of their estimates. I would like to see that when they type in their projects on their personal workbooks that it would transfer into a compiled list or "master" log workbook. Keep in mind that their are multiple users, so I don't want these estimates to overlap I want them to go to the next blank row on the page. Is there anyway that I can do this?Temp.xlsx

I attached a sample... I don't know if its the best one but I'd like the information from 2-4 to automatically go into page 1.

Since no one has responded to your request, I had a go and will give a good start