Very simple example:
; Make a table ("5" is 10% of what you expect the total number of items to be)
/hmake MyTable 5
; Format for adding items:
; /hadd TABLENAME ITEMNAME DATA
/hadd MyTable Name Riamus
/hadd MyTable Address 123 Main Street, Anytown, USA
/hadd MyTable PhoneNumber 123-555-1234
; Get the number of items in the table
//echo -a $hget(MyTable,0).item
; Get an item by name
//echo -a $hget(MyTable,Name)
; Get the item name of item #__ in the table (assuming none of your item names are numbers)
//echo -a $hget(MyTable,1).item
; Get the data of item #__ in the table (assuming none of your item names are numbers)
//echo -a $hget(MyTable,1).data
; Remove a hash table from memory
/hfree MyTable
; Load / Save a hash table to a file
/hload MyTable filename.ext
/hsave MyTable filename.ext
As I said, that's a basic example of how to do some of the things with hash tables. For more specifics, ask a specific question.