Posing and modelling
Taking better ingame pictures
Get your sim on a white background
Good ingame poses
Posing and editing poses
Sims Poser

Enhance your modelling shots
Shade, airbrush and high light a skin
Frankenstining and more
Frankenstein poses and drawing hair
Drawing hair
Drawing hair
Change the background and add new clothing to your sim

Photo editing in general
Adding a drop shadow
Transparent background - newbie friendly
Get rid of white edges
Photo editing a number of tutorials
Smoth edges and warmer pictures
Basic Photoshop
Photoshop tricks and tips an number of tutorials
Soft glow
Save your pictures right
Clear and sharp pictures
Polaroids

Create
Make your own paintings
Make your own wall paper
Human types - sims making
Meshing - milkshake - f.a.q.
Tatoos on skintones
Skinning for beginners to advanced - many tutorials
Make your own patterns
How to remove eyebrows...

Settings and building
Building a runway - step by step
Build a beach - step by step
Better decorating - general advise
Interior Design - use real world advise ingame
Floor plans for house builders
Floor plans
How to build a beach house - with an interesting roof

Misc.
Make your own fashion show
Time zones
Sims PE
Play in windows mode
Extract a sim from ingame to bodyshop
Cheats for the game - only up to night life
Font ressoces

Sims Poser
The sims poser topic is getting very long and it can be hard to find the different parts of the tutorial so here is links to the pages where the different parts appear.

All question regarding the sims poser should be asked in the topic

Basics

Add a head to your sim and a face

Add makeup

Changing the light

To save a pose

Use a Maxis mesh

Add a ingame head

Smothing things

Adding a expression to your sim