>VRChat resources and tutorials
http://vrchat.wikia.com/wiki/VRChat_Wikia
https://docs.vrchat.com/v1.0/docs/setting-up-the-sdk
https://www.youtube.com/channel/UC_9vjBF7PyfmG26KDcedXNQ/videos
https://youtube.com/TupperTutorials <--- Megatutorial

>Collection of 3D models and parts for avatars:
http://mikumikudance.wikia.com/wiki/Category:PMX_Models
https://mmd-pmd-mall.deviantart.com/gallery/
https://mmd-mall.deviantart.com/gallery/
http://3d.nicovideo.jp/search?download_filter=mmd&word=MMD&word_type=tag&work_type=mmd
http://seiga.nicovideo.jp/tag/MMDモデル配布あり

>Models for custom worlds and misc:
https://www.blender-models.com/model-download/
https://free3d.com/3d-models/blender
https://mmd-stages.deviantart.com/

>3D editing software:
https://www.blender.org/download/
https://sourceforge.net/projects/portableapps/files/Blender%20Portable/
https://vrcat.club/threads/cats-blender-plugin-0-4-1.6/
https://unity3d.com/unity/qa/patch-releases/5.6.3p1
https://learnmmd.com/downloads/#latestMMD