I actually did this instead of tailscale first; installing tailscale on a pfsense router was a challenge, iirc i had to find and install the freebsd tailscale pkg from the command line because the plugin doesn't give the option to connect to a non-tailscale control plane.
After I did that and connected to my headscale server (on my vps) I could ping pfsense's local ip over the tailnet, but couldn't get any traffic out from pfsense. Turns out I had forgotten the pfsense tailscale plugin automatically sets up outbound rules for you.
That was a rabbit hole I didn't feeling like falling down, so I turned off headscale and just used tailscale account and the normal pfsense tailscale plugin. But it's there and it does work fine if I ever wanted to go figure out the outbound traffic rules.
I installed ophcrack to a usb flash drive and cracked my ex-gf's windows password. No special knowledge except I googled how to crack a windows password. This was about 13 years ago though, no idea if that's still a thing.