Im not an expert, but i think im on the right way to protect my computer and data.
- I recommend you to use second option malware scanners like Malwarebytes and Zemana AntiMalware
- For removing junk files, you can use CCleaner Free.(watch out the installer, it offers Google Chrome, opt-out some options)
- Unchecky to keep your installer's checkbox un-selected
- For your browser, you can use HTTPS Everywhere.