How do I use cytoscape with only KEGG annotated genes and expression levels?

Question

[ishymutanda]

Hi there. I am a beginner in cytoscape. I have RNA-seq data with KEG annotated genes and their expression levels(JUST THAT) on a non-model plant. I would like to analyse the expression levels and co-expression profiles in cytoscape and represent it in a signalling network so as to have an idea of (1) Co-expressed genes and, (2) Regulatory elements. I tried to read the cytoscape manual by myself but I got more confused. Which apps do I need?, Do I need to format my data before importing it and how?, How can I make the excel file with "source" genes and their interaction attributes from such big data because thats exactly what I wanna know?. I greatly appreciate any help. Thank you.