Hi, Michele. The abbreviation PCA stands for "the Presbyterian Church in America," which is a Biblically conservative denomination that broke away from the PCUSA ["Presbyterian Church(USA)"] in the 1970's.

Here are some links for you to learn more about the PCA:

http://www.pcanet.org/

http://www.pcanet.org/general/aboutpca.htm

http://www.pcanet.org/general/beliefs.htm

My wife and I have been members of a PCA church in Elk Grove, CA for over ten years (Soaring Oaks Presbyterian Church - www.soaringoaks.com) and we have been blessed by the Christ-centered, Bible-based preaching and teaching we have received there. In fact, we have been so blessed, that when we recently moved to a new town (far away from any PCA church), we have begun (Lord-willing and with the support of Soaring Oaks Presbyterian Church) to seek a PCA church plant in that town (www.losbanospca.com).

One of the things I like most about the website links I gave you above is that the PCA clearly spells out what it's beliefs are at it's website.

Contrast that with the RCA ("Reformed Church in America"). At the main page of the RCA's denominational website (www.rca.org/index.html), there is no clear indication as to what they, as a denomination, believe. However, if you click on the "Book of Church Order" link, you get a reference to the "Doctrinal Standards" that their denomination maintains. However, their Book of Church Order has little in the way of doctrinal information.

I pray that helps as a starting point.

Trusting in the Lord through His Word,
Ted