ETrade and TD Ameritrade are very common and regularly used sites for commodity trading online. There are many other options but it's better to go with a known company than a site one is unfamiliar with.
There are lots of online trading companies that offer opportunities for trading commodities. Some of these companies are Plus500, SaxoBank online trading, and Sky FX.
Software for commodities trading can be found at a stock trading website. eTrade has software available for download. Most of the software found online for commodities trading is not free.
You can find automated trading software online, available to download from websites. You would find automated trading software present in businesses of all kinds.
The nature of online trading means that when getting started, you're better off with an aggregate of tutorials rather than a single one. You can find the absolute best at http://www.commoditycentral.com/commodity-futures-trading-courses.htm
You can learn how to trade commodities on the following website: http://commodities.about.com/od/researchcommodities/u/commodities-trading-path.htm. They have useful info.
ClearTrade, Unitied Futures, and Easy-Forex are three companies that offer information on how to trade commodities over the web. When you're ready to try it, all three websites also allow you to perform your trading with them.
You can find a good tutorial for learning about commodity trading systems online at the About website. Once on the page, type "Commodity Trading Systems" into the search field at the top of the page and press enter to bring up the information.
A tip for picking a commodities trading company is to find one that has low commission rates. Make sure that the company you chose does not hide large commission fees in the spread.
There are many websites related to the practice of online trading. Some examples of these websites include eTrade, InteractiveBrokers, and ScottTrade.
One can find information on commodities trading online from the trading websites themselves, or from those websites that are related (reviewing, strategies for tradings, etc.) Those websites can be easily be found using search tools.
There are many online sites someone could go to and find out where NYMEX gold is trading at. The most recommended online sites would be CME Group, they provide a lot of information.
There are many different places one could find information about FX Online Trading. The most common, trusted and reliable websites are FXCM, Go Currency and many others.
If you are looking for information on online currency trading there are several online currency trading brokers which will provide you with up to the second trading information.