Using Tor just for hiding one's IP in webservers' logfiles is one thing, but setting up Tor in a way that anonymity withstands attacks is not so easy.
If there is a need for protected anonymity I would strongly suggest "newbees" to use tools that are proven to hold what they are designed for. Have a look at
https://tails.boum.org
If you still want your own configured Tor on FreeBSD, while your health may be at risk loosing your anonymity, please do your homework right as this is no newbee task!
A viable approach is to read carefully the configuration files of such distros/bundles like Tails. By doing this you might discover that it is not enough just to configure Tor and that's it. Selecting an acceptable browser and configuring the webbrowser is a much more challenging task.
Browsers are configured for first use in a way that they collect as much data from you as they can get. And with each new browser version more data are collected to feed the big-data-industry. All those old and newly added configurations have to be reviewed and disabled when you really need anonymity while using Tor.
You should know that you cannot hide that you use Tor! All you can do is trying to hide within Tor. And this only works if you do it right and have no other leakages while using Tor.
IMO parallel Internet browsing and using Tor for some sites only is a risky task because you could mess a lot due to manual switching and the like. One single failure is enough and anonymity is gone for good. Also remember that you keep your Tor entry server usually for weeks!
While you are seeking anonymity you get a lot of attention just for the purpose to reverse it. Try looking at this from your ISP perspective. The ISP knows you well and gets all metadata, so do others all the time legally and not legally, but those do analyses and attacks in addition.
You can easily check if you do take your FreeBSD Tor-installation serious. Just check what
sysctl net.inet.ip.random tells you. If that does not match what was advised in
/usr/ports/security/tor-devel/files/pkg-message.in you might not be the person that does it's homework properly. This is just one single example.
