Oh dear... I closed the tab...
Yes, here... If you already have these, know this, or have something similar/better, then just ignore that part. If you are a total noob to this, and have 0 experience, it's likely all useful depending on what you want to do. You'll be able to to basic stuff in days/weeks, moderate stuff in a month/months, but the real technical stuff (depending on your OCD levels and patience) can take years so be patient with yourself.
An invite to the modding lobby:
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Enimaroah, hooh, 2155X, and ManlyMarco have made a huge number of resources and softwares to help with that (scroll up to top -- they link new toys often). Also they will help with questions and stuff as well. Be prepared and have thick skin in there... Everyone kind of jabs at one another, don't be put off or offended, take those newbie lumps and smile, you are among the best... I mean, this is essentially the community that fixes games where the original devs failed...
This is almost the latest build of Unity's HDRP 2018 version, so the learning curve is moderate to steep.
Do you have C#, Python, and Java JSON language experience? If not: (some reading and learning here)
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(bookmark this)
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(go ahead and make a Github account, you'll be living here a while)
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(not 100% necessary depending on what you want to do; start with C# scripts)
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(technically not at all necessary, but nice to know and have depending on your personal mod needs)
You will also need the latest .Net, Python, and Java libraries, as well as MS Visual Studio 2019:
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(.net)
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(start with the 2019 Community free version)
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(additional free tools that may help)
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(Best Java IDE)
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(easiest Java language to learn)
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Additional tools you will need:
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(a MUST have!)
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(great source of info)
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(not a need, but faster than VS on load for quick editing an already compiled script, also works on all languages)
If you plan on doing models or textures I'd suggest grabbing these:
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(base 3D modelling software)
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(Helps make HDRP 3D texture/shader files fast)
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(best free alternative to Adobe Photoshop)
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(not necessary but nice to have)
For sound modding and enhancement start here:
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(great sound ripping and production suite for free)
Just to familiarize yourself with the Unity build, I'd nab this:
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(the game engine, necessary for understanding the output file formats and such)
(4.14.f1 is the closest to the version AI-Girl uses) You may locate a bootlegged exact version around the net, which I believe was 2018.2.12.p3 but I am not 100% certain on that, ask around, someone told me once but I forgot off hand. However, this is a good, safe starting point anyway, you can always import your work into other versions with minor tweaks needed (VS will open and coach you on the language differences and what needs to be changed and optimized).
Also you can find free or very low cost classes here:
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(depends on what you need and how deep down the rabbit hole you are going)
Udemy is awesome and where I started a few years back... Just make sure the course is exactly for what you want and something that will hold your attention as many can be long, 20-50 modules.
Some Unity modding starter tutorials/examples:
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There you go, it's a good starting point anyway. Certainly more thorough than I ever got! LOL!