Here are the sample of leads  - Top 20 Construction Company in Australia.

I used contactout.com, snovio , salesQL to check the details of each company.

I use some of web research technique I've learned during my lead gen and email marketing training at ProVA

Google Drive Link: https://docs.google.com/spreadsheets/d/1VTt3Uoj2bJM-AN_Wp2Dcg1VarfGKNfUPIrrZTbkys2U/edit?usp=sharing

Also Started practicing what I've learned in GohighLevel by making Funnels and Automations.
Basic Funnel Design :

In addition, I also made some Cold Email campaigns in Instantly. 
I build lead list, create an automated script and monitor the campaign's result/KPIs.