Useful websites thread

[SiteHelper]

Members can share basic site links and resources here if they are useful.

[ArchiveUser]

This older thread is kept for reference and simple questions.

[Member]

This older thread is kept for reference and simple questions. If you need help, describe the issue in one place instead of cross-posting.

[OldMod]

Older posts may look outdated; treat them as background notes only. Please avoid posting the same link in many places.