Customisation for energy broker

Hi Everyone

New erpnext lover over here, I just installed it on my VPS everything that comes with this ERP is phenomenal, anyway, My company is an energy consultancy, so I am the middle man between customers and energy suppliers, I am just wondering if anyone has customised the system to be used for energy broker/consultancy/supplier, it would be great if I can get some advice of how to customise it and get the best out of it.

The system at first can be overwhelming due to all the functionalities etc, and as a new ERP user its been a little challenging for me customising it, I had done the CRM which I had to pay someone to do it for me but I want to learn to customise it myself.

Thanks for the help in advance.