How to Behave with these files?

I downloaded Lynda HTML Tutotials and after extractio, I found something like that. Now tell me what shall I do?

Answer #1
Extract it again.
What you see is original, group release. It is packed two time. I dont see all extensions, but I believe first file is named “n-htmlx.rar”. So find file named like this and then Right-click -> Extract
Let me know the result
Answer #2
try double clicking the file in the upper left
or
sort by details and find the rar under “type” file
double click it and extract
Answer #3
Thanks to both of you. SOLVED.
Answer #4
Good to hear