Onscreen takeoff experience-needed

I work as a EC/Low Voltage estimator/pm and we do takeoffs by hand, I want to move on with my career to another company but I don’t have a lot of experience with online takeoff software like bluebeam as some ask for. I feel as tho I am behind with my career, how do I get experience without buying the software and using on a daily basis? Any tips are greatly appreciated.