Links are kind of out-of-whack with the new forum switch. Hope you can find them.
Fixes:
-Have Han Plants give you Han, not Bebercane by Corylea
-Celina Wraith Fix
-There are other fixes but they're designed to be applied retroactively, only if you've had the bug (Ch. 2 Vizima Confidential Fix, Ch. 3 Locked Door Fix)
Tweaks:
-Stuff that Makes Geralt's Life Easier - Technically a bundle of 3 cheats (access storage from inventory, meditate anywhere, toggle cat vision without cat potion), but I just couldn't live without them.
-FlashMod/FCR optional tweaks - JUST THE OPTIONAL TWEAKS! Review them and apply to your own taste. I use visible wounds, no logo movies, TPP Camera, toggle UI and Walk in OTS mode, Werewolf Fur fix, larger stack size, 3 armor potion slots, and no flaming sword icon. Core balance and gameplay changes are too radical especially in FCR (for a first playthrough). However, for later playthroughs I do typically use the FlashMod core changes for the main campaign (NOT the fan/official adventures).
-No Cemetary Drowners Mod - enables you to banish Drowners in Ch. 5, who by that point pose no threat and give no XP, yet swarm all around and and pose a real nuisance by preventing you from entering caves
Cosmetic:
-Roxtar's Inferno/Black UI (I prefer Inferno) and Dark Witcher mods - big improvement to the UI color scheme, makes Geralt's leather darker and gives him golden eyes and more details. Also changes Shani and Triss's hair and dress colors (optional, not recommended for 1st playthrough).
-Roxtar's hi-res character models - technically just sharpened, still a major improvement
-Texturen Mod - sharpened textures for everything else in the game. I use selected folders from the mod (removing grass and Geralt's textures). Not necessary, just according to taste.
-There's a mod that removes the thunderous sound when transitioning areas. Never really bothered me until I got rid of the sound, now I prefer it without it.
The best fan adventures are (starting roughly with best, and the top 5 are my "must play"):
1.Medical Problems 1
2.Medical Problems 2: The Witcher Disease
3.The Crossroads
4.And a Curse, and Love, and Betrayal
5.Evil Decision
6.Wraiths of Quiet Hamlet
7.Entrapped
8.Merry Witchmas
None are voiced in English however many have original music, and they all have great writing and level design.
The two official adventures (Price of Neutrality, Side Effects) are worth a spin too.