CRM/sales tracker for home improvement

Good afternoon, I was recently hired in residential sales for a glass company, the problem is they still do everything by paper. The guy running it is 70, has no desire to improve, and is retiring soon (hence why I’m hired)

What are some good systems for people in home improvement or specifically in the glass industry that you’d recommend?

Also, if anyone is in the same industry and is willing to talk to help me out with more industry specific things that would be greatly appreciated.