Don't just click "Next" blindly. Look out for checkboxes that ask to install extra toolbars or change your default search engine.
If your "download, double-click, install" flow hits a snag, try these quick fixes: download double click install
Avoid "third-party mirrors" that bundle the software you want with "bloatware" or "PUPs" (Potentially Unwanted Programs). Step 2: Double-Click – Awakening the Installer Don't just click "Next" blindly