it seems the download link is not working. Is this discontinued by any chance?

Hello. I'm new to Sketchup. I've learned the basic tools, but I would like to make more organic objects Like a flowers, or certain types of food. I want to be able to create my own objects without relying on 3dwarehouse.

I'm an artist wanting to create pieces for commercial use. It would be too difficult to try get permission from each 3dwarehouse creator. I've searched high and low for tutorials but it's difficult to find them.

Could anyone point me in the right direction or give me any advice on if I'm wasting my time trying to figure out out?