Look for README.txt or instructions.txt . These are the "write guides" provided by the original creator.
If you get an error during extraction, the download likely failed. Try downloading the file again. mamodsch.rar
Before interacting with the contents, verify that the file is safe. Look for README
Use WinRAR (the native format creator) or 7-Zip (a free, open-source alternative). mamodsch.rar