Many uploaded resources are uploaded in volumes, so when downloading, you have to manually download them one by one, which is super troublesome! DownLoadRAR is great, it's only 114KB, a single-file green version, with very fast download speed (tested on residential broadband), and extremely practical.
When unzipping, it's best to create a new folder because it generates a config.INI text configuration file, which contains the path of where you download resources to on your local hard drive.