Excel for plumbing business

I am looking for someone to help me on a weekly basis with Excel spreadsheets for my plumbing business. Primarily, I need assistance creating invoices and estimates. While I have some experience with Excel, I would classify myself as a beginner. With this in mind, I am looking for an experienced and knowledgeable freelancer who is willing to help me out. The ideal candidate will be able to easily create well-crafted invoices and estimates, as well as advise me on the best way to use Excel for tracking expenses and income, creating schedules and appointments, and anything else I may need for my business.