Yeah you might have to actually look through them all and separate the wheat from the chaff.... Not all of the links there are current but there is definitely plenty of useful information to be found there. Also keep in mind that while some of the tutorials on the wiki are a few years old they are still relevant, a lot of the same techniques are still used now that were used 5+ years ago.
if your initial question is "where can I find 100% comprehensive tutorials that walk me through every step of environment art" the answer is "it doesn't exist".
Environment art covers an incredibly wide array of topics and skills, asking an extremely broad question about how to be an environment artist without any more specific information as to what exactly you're looking to learn or what you already know is asking everyone else to do the leg work for you.
The wiki has tons of useful information if you spend some time to look through it. There's also a Search function on the forums that will yield quite a lot of results for what you are requesting.
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if your initial question is "where can I find 100% comprehensive tutorials that walk me through every step of environment art" the answer is "it doesn't exist".
Environment art covers an incredibly wide array of topics and skills, asking an extremely broad question about how to be an environment artist without any more specific information as to what exactly you're looking to learn or what you already know is asking everyone else to do the leg work for you.
The wiki has tons of useful information if you spend some time to look through it. There's also a Search function on the forums that will yield quite a lot of results for what you are requesting.