****** USE EXTREME CAUTION WHEN DOING THIS!!!!! *******
Doing this WILL DELETE ALL customer and order data from your database.
**
Go to Admin->Tools->Install SQL Patch and paste the following in the box and click Send.```
truncate table customers;
truncate table address_book;
truncate table customers_info;
truncate table group_pricing;
truncate table orders;
truncate table orders_products;
truncate table orders_status_history;
truncate table orders_products_attributes;
truncate table orders_products_download;
truncate table orders_total;
truncate table admin_activity_log;
truncate table authorizenet;
truncate table banners_history;
truncate table counter;
truncate table counter_history;
truncate table coupon_email_track;
truncate table coupon_gv_customer;
truncate table coupon_gv_queue;
truncate table coupon_redeem_track;
truncate table coupon_restrict;
truncate table customers_basket;
truncate table customers_basket_attributes;
truncate table db_cache;
truncate table email_archive;
truncate table files_uploaded;
truncate table paypal;
truncate table paypal_payment_status_history;
truncate table paypal_session;
truncate table sessions;
truncate table upgrade_exceptions;
truncate table whos_online;
And this too if you used the linkpoint payment module:```
truncate table linkpoint_api;
But, given that you're starting a new store, and by the sound of it, likely also new products, a clean new install might be a better idea.