Database design of "What to think of what to write"

Want to do a multi-user multi-role article sharing, mall system, nondescript system,
For the time being I can think of some of these tables:
User table, Role table, role-Permissions table, permission table
"Article table" "Article Unlimited Classification table"
"Product List" "Product Unlimited Classification" "Product picture Table" "User Review Form"
"Order Form" "Order Detail label"
"Temporary Shopping cart table"
　　
　　
　　
If you are eager to help me, please give me a little bit of guidance.
Any help is appreciated.