thought I share come of the web pages I use regularly. Maybe others can do the same. Options and volatility Option Strategy finder, all sorts of combos listed/explained http://www.theoptionsguide.com/option-trading-strategies.aspx Option Strategies and their greeks explained, interactive analysis http://www.888optionsnet.com/investigator_2/wi_strategyExplorer.asp?disclaimerread=true number of tools and data around (historical) IV http://www.ivolatility.com/home.j historical IV data http://www.optionistics.com/ probability calculator (I actually use that to quickly look up HV for a name) http://www.ivolatility.com/custom/pbc/ VIX Term Structure and historical VIX data http://vixcentral.com/ Options Screener (most active, higest Ivol and other) http://www.marketwatch.com/optionscenter/screener?screen=1&displaynum=100 VIX and more (blog, very educational if you want to learn more about VIX and VIX related ETN's (VXX etc) home page http://vixandmore.blogspot.co.uk 'best of' articles http://vixandmore.blogspot.co.uk/search/label/educational http://vixandmore.blogspot.co.uk/search/label/hall%20of%20fame http://vixandmore.blogspot.co.uk/2010/12/top-posts-of-2010.html earnings data and dates earnings data (earnings dates and historical moves) http://www.optionslam.com/ earnings calendars http://www.morningstar.com/earnings/earnings-calendar.aspx Market commentary and economic calendars Market commentary and free "Flash headline" alerts and paid for (directional) trading trading alerts (trend following) - I use the former http://www.stateofthemarkets.com/ economic data calendar (U.S.) http://www.marketwatch.com/economy-politics/calendars/economic economic data calendar (U.S. and international) http://global.econoday.com/byweek.asp?cust=global-premium FED Meeting calendars, statements, and minutes (2007-2013) http://www.federalreserve.gov/monetarypolicy/fomccalendars.htm charts and stock screeners Stock screener with ability to filter for loads of different fundamentals and other criteria http://www.finviz.com/screener.ashx stock charts pages http://stockcharts.com/ http://ycharts.com - can chart economic data (like jobless claims) and things like total return prices (incl. divs) for stocks and indices Tools/ Excel Addins Hoadley options Addin/tools, great Excel AddIn (windows only) with option pricer, Strategy evaluator and much more (good set of free tool, good value 'professional version') http://www.hoadley.net/options/options.htm Excel AddIn (I think also Windows only) to import all sorts of data (live and historical) from Yahoo Finance (free, you need to join Yahoo group though) http://finance.groups.yahoo.com/group/smf_addin/