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As times change and viewers change the look of the build menus will most likely change. I will not be updating as the world moves around us. Hopefully you will be able to follow along with these basic learning tutorials at any stage of viewer development.
Click on the photos to get a larger view of the pictures as needed.
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Touch the wand to the ground in front of you. A cube shape box appears. Looking at the GENERAL tab we see a place to name your object. You can type in Photo Frame to replace the default "Primitive".
This is the screen where you would set the permissions and price of an object as well as where you would choose "Allow Anyone To Copy" in order to make a Take a Copy item.
More on that in another post.
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Find the fields for Size in Meters on the left and in the X field type in a "1" and in the Y field type in "1.5" and "0.100" in the Z field.
Find the Taper fields over on the right (across from the size fields) and use the arrow to make the fields say "0.15". You could type that in also of course.
We now have a plywood picture frame -- flat on the ground.
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Our picture frame is partially buried in the ground now, so using your mouse, drag UP towards the top of the screen on the BLUE arrow (it is pointing up as you can see :D).
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With the object selected (as shown in the photo) click on the box that says Texture (it will look like a piece of plywood until we complete this next step). A texture choice window will open. While we could add a texture to the frame at this time, we are instead going to make a plain frame by clicking on the small button that says Blank.
When the frame turns all white, click on the Select button. The texture selection window disappears.
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When you find a color that you like showing up in the Current Color box on the left, click Select and that color will appear on your frame.
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Click on the center of the photo frame, where you picture will go, and a target symbol appears. This let's you know you will be changing that particular face of the prim.
Click on the color box again, opening the color picker and turn that face of the prim back to white by choosing white from the color choices.
Put a check in the box called Full Bright (to the right of the color box).
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You can use either a texture you have uploaded (png or tga) or a picture you have taken within the viewer using the File > Take Snapshot Option. [Note: I am not sure that is active in OL as I write this but it will be soon if it isn't now).
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Carefully, drag the picture from your inventory onto the face of the prim where the photo will go.
You picture will not always appear perfectly on your photo frame. In this case the direction is off.
We can fix that by using the Rotation field in the Texture Window of the build menu. The numbers that would likely go here would be either 90, 180 or 270. In my case the "270" was a winner. You can also flip your photo as needed. Play around with this until it looks just like you want it.
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Just go back to the Object tab and type in some new sizes for height and width.
Alternately you can use the tiny up and down arrow buttons associated with the field windows.
Be sure and name your work if you didn't do that in the beginning and take your framed artwork into your inventory.
All done!