I hope this is the correct forum so please forgive me if it is not.

I've written 4 pretty good songs and I'd like to get them copyrighted.

What is the most accepted, efficient and cost-effective way of doing this?

Any help would be greatly appreciated!

Thanks-Jason in Fresno
Sorry mate, put this in the musicians talk forum or, honestly, search it. Or Google it. There have been many, many threads on this already.
There's only one thing we can do to thwart the plot of these albino shape-shifting lizard BITCHES!
unless you are a really famous guy (which I presume you're not) it's not really worth it, people will steal stuff anyway, or come up with the same kind of things you wrote in your songs.