functional annotation and gene quantification

Question

[khemlalnirmalkar]

Hello folks,

I have shotgun metagenomic data, assembled with metaspades and annotated with prokka, now I am looking for gene quantification/KO/functional analyses. I came to know that I need to map back contigs with reads, please can anyone suggest me a tutorial/github repository or guide me on this. I am a newbie with this kind of analysis.

Thanks,

Khem