Open-source intelligence (OSINT)
Open-source intelligence (OSINT) stands for information gathering from published or otherwise publicly available sources.
There are many communities that aggregate OSINT information and tools. The OSINT framework provides links to many public data sources: OSINT framework
After experimenting with the OSINT framework you might want to shrink your online presence. Just Delete Me is an online service that specializes on guidance on how to delete your accounts on many different online platform. Of course in the real world you sadly don’t have any say whatsoever over what online services do with your data after you have officially “deleted” it. But at least it might slowly fizzle out publicly.
If you want to dive deeper I recommend trying out Kali Linux, a Linux distribution focused on penetration testing. It comes pre-packaged with many incredible tools, like:
With a certain closeness to the infamous Mr. Robot TV series my guess is that Kali Linux might also include the FSociety scripts in a future release.