Originally Posted by nurk
very new to this site and phone anyways how do i install themes on my device
You need to root your phone and put a custom ROM on it. Scroll down to the forum that is specific for your phone (there's a huge picture of it next to the right forum) and find a tutorial.
Alternatively, you can go to cyanogenmod.com and go to the wiki there. There's a good tutorial on getting a custom ROM on your phone, which will then allow you to apply a theme.
The best thing I can say is to read as much info you can, which will involve google searches and searches here, and make sure you understand 100% what you are doing. There are some steps that can brick your phone if you don't read and understand fully what's going on.