WEBSITE design best practices?

My community is in need of an easy and broadly functional website for both internal and external use. Sensitive document storage, quickbooks integration, member communications, ecological restoration project monitoring, voting system, and other features needed. User-friendly but also adaptable?

Does anybody have any ideas or experiences to share? We are an HOA-model “cohousing” community.

I need more information before advising. I am not seeking money, will assist for free.

Size of your group/ turn-around in occupancy?
You may need two sites, with one a clone of the other. One for internal and one for marketing.
The cost will be the same to maintain, probably for free. And less than $50 for the two domain names.

Email me. Jim Costa . . . Costa4670@gmail.com

Also see: Accounting Plan: with Free Accounting Software, Auditing by Owner
& Budgeting Process. Link