If you have a monitor/TV with an HDMI input, you won't need an RCA cable - that's only for very low-resolution "olde-school" monitors that will be difficult to read text on, especially on a GUI desktop.
There is a hardware compatibility page on the eLinux.org wiki (along with tons of other very useful info) at:
and the page dealing specifically with SD cards is at:
The wiki is the long-term repository for info about the Pi, and tends to be organized much more concisely than the discussions here in the forum, some threads of which run more than 20 pages over nearly a year in duration! Some thread info is just plain wrong or outdated here, also, while the wiki usually has the most up-to-date info published pretty much the day it occurs, in most cases.
When I was a shiny young new engineer going through nuclear engineering training in the Navy, one of my instructors wisely told us, "In 10 years, there will be two kinds of engineers, those who understand computers and software, and those who are unemployed ... that was in 1976! Imagine how true that is today, given the increasing importance of computing in virtually every facet of our daily lives. You most likely will be engineering robotic systems of some sort during most of your future career, as the engineering of components is pretty much preprogrammed today in computer-aided design, which was mostly computer-aided drawing/drafting in my early engineering days. Those who can successfully capture engineering disciplines in software will make those who don't unemployed and unemployable.
The best things in life aren't things ... but, a Pi comes pretty darned close!
"Education is not the filling of a pail, but the lighting of a fire." -- W.B. Yeats
In theory, theory & practice are the same - in practice, they aren't!!!