Currency and Inventory Limit
You generally don't need to touch either but these, however your store many need to display a different currency symbol and you'd change that here.
1 ) Currency: Enter your currency symbol
2 ) Inv Limit: Inventory messages will display only if the inventory quantity is less than this value
Inventory check, related images, page numbers and price discount
1) Inv Check: Do you want the system to stop someone from trying to order more than is in stock? Set Yes to limit them, No to allow backorders
2) Item Select: Do not display the item drop down box in the administration area (a good solution for larger stores)
3) Related Images: Do you want to display images next to each related product?
4) Page Numbers: Select Yes to display page numbering (ie. 1 | 2 | 3 ...) or No to just display Previous and Next links
5) Price Discount: Do you want to set price discounts (ie. give lower prices for multiple item purchases)?
Tax, stock, and items links
1 ) Tax/Costs: Set this to Yes if you want to log your product cost and add a tax amount for items
2 ) Out of Stock: Select Yes to display out of stock items with an "unavailable" message. Select No if you don`t want to list out of stock items
3 ) Featured Link: Do you want to display a Featured Item link on your navigation section if featured items exist?
4 ) New Item Link: Do you want to display a New Item link on your navigation section?
5 ) All Item Link: Do you want to display an All Item link on your navigation section?
6 ) Sale Link: Do you want to display a Sale Item link on your navigation section if sale products exist?