Brokerage Sites
Many of these trading sites have apps that allow you to trade on a variety of mobile devices. Search the names below in your device's app store to find out if the broker you're looking at has one. The cost of trading varies from site to site. Invest at your own risk.
Robinhood - TRADING THROUGH DOWNLOADED APP ONLY
Important Investing and Finance Info
Credit ratings (S&P Capital IQ)
Moneychimp -- investing basics
Investing definitions (Investopedia)
Investing defintions (Finance Reference)
Major News Sites
Simulated Trading
These types of sites and mobile apps will help you learn how to trade without having to risk actual money. Great for first-time investors or those wanting to test a new trading strategy.
Stock Market Simulator - Google Play Store
Stock Wars - Apple App Store
Trade Hero - Apple App Store, Google Play Store
Social
Stock Screeners and Charts
Stock-Specific Sites