How do i?

not exactly sure if this is the right place to put it but im posting here anyway im curious how do i make custom content like clothes and jewelry also how do i use CAW or Create a world cause theres this beautiful world in a movie i like and im trying to duplicate it but i have no idea as to where i can do it and ive seen lots of people talking bout CAW on Mod the sims if you know the link please post it thank you

also google is being a pain right now and isnt cooperating thats why im asking for link so please no comment saying just search it on google -.- cause trust me im trying

Here's the link to the CAW page - http://www.thesims3.com/game/tools/world