For tax deed investing.what apps do I need to get organized?

[Aaron Maxwell]

What apps should I use for setting up a system to invest in tax deeds? Do I need a CRM and a acquisition manager? Do I really need to know how to work excel spreadsheet to the T or just basics? Should I use propstream? I want to contact the owners of tax deeds /pre foreclosure before they hit the auction block. I am creating a tax deed detailed due diligence check list. Is there anyone experienced in this field? What are the main tools that I need?