Opera, the browser
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Opera Browser
Download the Opera browser and experience how much better a browser can be.
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Opera Support
New to Opera or have a question on the browser? This is your starting point.
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Opera Forums
Didn't find the answer to your question in the previous link? Post it in the forums (Don't forget to search them first).
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Opera's Settings File Explained
An explanation of the 'opera:config' screen for advanced customizing.
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A web page appears to display incorrectly in Opera
A good introduction to what may make a web page display incorrectly in Opera.
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Dev Opera
"Dev Opera is a community resource site where developers can share tips, tricks, extensions and more."
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Opera Developer Console and DOM Snapshot tools
Two very useful tools for website developers.
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Opera Press FAQ
Destined for the Press, but an interesting read for anybody.
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Opera Watch
"Opera Watch, an Opera browser blog, is run by Daniel Goldman, who works for Opera Software as a Technical Evangelist." If you are new to Opera, be sure to see his "Opera tips" section.
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Top 150 Popular Firefox Extensions and Opera
Rijk's list compares Opera's built-in functionalities to Firefox's add-ons. Particularly handy for those coming to Opera from Firefox.
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Web Developer Toolbar & Menu for Opera
Also for web developpers: Use this in conjunction with the Opera Developer Console and DOM Snapshot tools (above)
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Extending Opera : The Ultimate Guide to Customizing Opera
Thought it was impossible? Probably not. But as Pallab points out, finding out how may be difficult. Luckily he's brought together a LOT of helpful advanced customization sources here.
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Flashblock for Opera 9
From A.Ruzanov's blog; if you've just had it up to here with useless flash animations.
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Opera version history
This page tracks the introduction and finalization of Opera features. Comes in handy when other browsers claim to be the first to introduce features already present in Opera.
The other side of my brain
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Wandering electrons… but not too far "2"
My blog for subjects other than Opera / web technologies. Give it a visit to explore the other corners of my noggin.
Wanna make a web site?
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My site doesn't work in x browser
This (relatively) short article on why a site can work in Internet Explorer and not in other browsers, such as Opera or Firefox, should be prerequisite reading for anyone wanting to make a webpage.
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HTML Dog
This is a how-to site that I found (and still find) very useful for learning HTML and CSS
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W3Schools
Although not to be confused with the W3C (see below), this how-to site is also quite useful. It provides most notably web-based interactive tools that you can use to grasp basic concepts quickly.
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World Wide Web Consortium (W3C)
The W3C is, if you will, the "Governing Body" of website development. Sometimes difficult reading, but this is the source of all standards compliance.
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W3C Markup Validation Service
If you want your website to display correctly in all browsers, it needs to compliant to the standards established by the W3C. You can use this validator to test your HTML markup.
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W3C CSS Validation Service
Your CSS must also be valid to insure correct cross-platform display. Check it here.
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Web-developer's Handbook
This is a pretty handy useful-links site for those looking for web development specific sites.
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A List Apart
As they say it themselves, "'For people who make websites', A List Apart Magazine (...) explores the design, development, and meaning of web content, with a special focus on web standards and best practices." Essential reading.

