In the following example I will be putting the texture files, your JPG's that will actually show up on your item, in a Poser Runtime folder - this may seem contradictory as we are creating a Daz material set, but it does no harm. Studio can find them there, and it may be useful for both you should you wish to later create Poser MATs, and for any of your users that want to make Poser MATs with them as well.
The folder structure you need to set up should look something like the image to the left, (I've made it in my root 'c:' drive, but you can make yours anywhere) and the only real difference between Studio 3 and 4 that concerns us is the cosmetic name change of 'content' to 'My Library', which was a transition thing from Studio 2. As Studio 3 also contains a 'My Library' folder which it uses, we'll use that as a base. I've made a small empty folder setup like the one in the picture which you can download in a zip www.calida3d.com\public\zips\Empty_Library_Tree_Calida.zip if you want, so you can use it again and again. (Although I suggest changing 'Yourname' and 'Yourproduct'!).
In this tutorial, I will be discussing how to create your own textures (materials) for items inside Daz Studio, saving them, and making them ready to share with other people! Please note you will need a familiarity with Windows explorer to create new folders, rename them, and copy and paste files.
For me, the folder structure is the most vital part. If your setup isn't correct, the materials you save may not work or even show up! There are some minor difference we'll find between Studio 4 and Studio 3, but I'll cover that.
Personally I like to create an entire blank folder structure, away from your main content, for a couple of reasons. First it means you can clearly see all the files in one place, and will not have to hunt around later copying and moving folders with all the rest of your content confusing you, and secondly it makes it very easy to test when you're all ready to go.
A Beginners Guide to Making Freebie Materials in Daz Studio