On this page I will post some commonly used terms in trading with some explanation or a direct link to a page on Wikipedia containing the information.
MACD
MACD or Moving Average Convergence/Divergence. I could explain it here but if you study the page on Wikipedia on MACD I'm sure you'll do fine. Another useful link about MACD is found at the following stockcharts page.
RSI
RSI or Relative Strength Index is measuring the velocity and magnitude of directional price movement by comparing upward and downward close-to-close movements. Read the interpretation on Wikipedia here.