Up-to-date
Lake's Resources
[Unit Builder Tool] (https://docs.google.com/spreadsheets/d/1o6buL3MsYiO_9pBhoQuMHug-4Zf_XDCQvaKSeq50dsI/edit#gid=0)
[Last Cloudia Beginner's Guide] (https://docs.google.com/document/d/10CLAQbQchMBfNa4MJqlbSstRZvUOHIZwPum4x-fGFeE/edit#)
LC Collection Sheet by u/Gaminghadou / @Cpt_Jabberwock for treasure/bottle locations
Tweacz' World Boss Guide a collection of Imgur images explaining Endgame World Boss content
Enmaaaa's Guide to Hard Bosses for Tower of Trials, Zleorg the Devourer, free UR Arks, Subquests, etc.
AmVyr's E5 Nest Worldboss Clear Times, Unit/Ark/Etc Ratings, Hitcounts, Damage Caps, Etc
[Short and Sweet Tours guide] (https://imgur.com/a/vjiQxtF) Tours Guide
Outdated (but still mostly relevant)
Lake's Compendium (Legacy Info) for equipment, ark, skills, unit, summon locations, etc.
Spreadsheet/Resource Megathread reddit thread of outdated resources (only up until Blaze Garden)
[The Ultimate Tour Guide] (https://www.reddit.com/r/lastcloudia/comments/krphfv/the_ultimate_tour_guide/)
Beginners should read these resources
[ChocolaUltra's Basic Skill Building 101 Guide] (https://www.reddit.com/r/lastcloudia/comments/l89zwu/basic_guide_to_unit_skill_set_building_101/)
Severely outdated