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## Summary:

- I am doing experimental research on metal oxide semiconductors and graphene oxide, I also want to do some theoretical analysis.

## Main Question or Discussion Point

I am doing experimental research on metal oxide semiconductors and graphene oxide, I also want to do some theoretical analysis. I am new in theoretical, so I need guidance how to proceed with the simple calculations, like DFT. Is there any authentic book with examples? and also is there any website with DFT calculations codes for understanding the electronic properties of metal oxide semiconductors (for example TiO2) and Graphene oxide? or any other suggestion how to initially proceed?

Thanks in advance!

Thanks in advance!