1. Get the Deal of the Day in Your Inbox

Sign up for Best Buy's emails and you'll receive a link to its featured Deal of the Day, which offers savings of up to 50% off popular items such as laptops, smartphones, HDTVs and gaming systems. The Deal of the Day is sometimes paired with free shipping. These deals are only good for 24 hours and product quantities are limited.

2. Earn Points, Get Free Shipping with Rewards Zone Membership

Join Best Buy's Rewards Zone and you'll earn 1 point for every dollar spent at Best Buy. For every 250 points that you get, you'll earn a $5 gift certificate, redeemable on BestBuy.com. Members also get free standard shipping on all orders of $35 or more. Rewards Zone members who spend $1,500 a year are automatically upgraded to an Elite membership, which offers free standard shipping with no minimum purchase, exclusive Elite customer service and a 30-day return period. Members who spend $3,500 per year are automatically upgraded to an Elite Plus membership, which includes free expedited shipping on all purchases, exclusive Elite Plus customer service and a 45-day return policy. All Rewards Zone members also receive early access to special sales and members-only shopping events.

3. Exclusive Coupons for College Students

College students can sign up for exclusive coupon codes and deals, such as an instant $100 off a portable, touch-screen all-in-one computer. A valid .edu email address is required for access.

4.  Shop Holiday Weekend Sales

Best Buy regularly offers special two-day sales on holiday weekends, such as President's Day or Independence Day. Some of the best deals can be found after the Super Bowl (in February or March), when many items, including electronics, are greatly marked down. Discontinued model prices are also slashed.

5. Guaranteed Price Matching and Adjustments
Best Buy will match competitors' prices, including Amazon.com and warehouse clubs, for select items. Eligible products are marked with a “Price Match Guarantee” badge on bestbuy.com. Plus, if an item you buy goes on sale within 15 days of purchase, Best Buy will readjust the price and give you the sale price.