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copied!<p>If you want to be marketable, I'd start with learning the lowest common denominator, the default Rails stack, to get broad appeal. Then maybe consider acquiring some more niche skills to raise your value to a subset of potential clients/employers.</p> <p>That pretty much means targeting MRI 1.8.6/7, Rails 2.3.4 (consider learning at least HAML and rspec in addition to erb and test/unit) and MySQL in an Apache *nix world.</p> <p>I wouldn't recommend learning much about deploying to a Windows stack - the target for servers is overwhelmingly Linux or perhaps some other *nix flavour. For development web server purposes, Mongrel works fine on Windows.</p> <p>Build on Windows by all means - I do, without too much pain - but be aware that the visible part of the Ruby/Rails community (the people who mostly develop the libraries and frameworks and most of those who write about it online) are predominantly OSX or Linux users, so there's often a delay in the trickle-down to Windows users, especially where OS interaction is called for or where there are compiled elements to libraries. Also, I'm reliably informed that Rails startup is <em>much</em> slower on Windows. I don't want to confirm it personally - I might get upset.</p> <p>MSSQL works fine with Rails, but I'd be cautious about using any platform-specific features for reasons mentioned above: you're unlikely to find a site that will be happy to deploy to a mixed Win-*nix environment. The MSSQL ActiveRecord code may also not be quite as hardened as MySQL or SQLite - the one bug I ever found in any version of any Rails-related code was in there. That said, if you don't use any MS-specific features you'll find porting easy. But then if you don't use any extra stuff, why not skip it completely? There are enough differences (the query "optimizer" in MySQL for one takes some getting used to) that you're probably better off learning the platform you're most likely to be targeting.</p> <p>As for Eclipse, it's obviously a mature development environment but I'm not sure how good the Rails plugins are (and as a hostage to Lotus Notes I'm allergic to using Eclipse any more than absolutely necessary). If you can't live without an IDE (and I'd recommend that you try - you'll learn more) then there are <a href="https://stackoverflow.com/search?q=rails+ide">several SO questions</a> that cover the alternatives.</p>

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