If you are running -CURRENT, you should be on the mailing list, and you should decide whether or not the changes implemented are worth updating for (based on your FreeBSD and general unix systems experience).
However, if you are starting out, stay away from -CURRENT. It is not what it is for. Even if you are experienced with FreeBSD, if you aren't a developer you may still run into problems you aren't able to solve (additionally, it may trash your system, make your toilet back up, kill your dog, etc).
You're better off tracking -STABLE for "possible mild breakage" but up to date software.
If you have to ask questions about -CURRENT, you probably shouldn't be running it...
edit:
-STABLE is not like "Debian Stable" if you've come from Linux. -STABLE is more like Debian TESTING, and -CURRENT is sort of like the combination of Debian UNSTABLE + whatever pre-release kernel Linus has in development, running on his own box. FreeBSD -RELEASE is more like Debian "Stable", for comparison.
If you're not pretty clued up with C development and the way Unix in general is supposed to work, steer clear...
From the sounds of it (your previous threads) what you really should be tracking is -STABLE. It is still fairly current, there is just (not supposed to be) ABI breakage. The tree may still be broken occasionally. -STABLE is the equivalent of "rolling release" that you were initially looking for.