Coupons are no longer limited to basic food items. You can find coupons for everything from child food to pet food, drugs, personal care items, cleaning supplies, office supplies, and children's supplies. So learn the fundamentals, set aside around 30 minutes each week, and you'll be well on your way to acquiring a significant amount of extra money each year. Consider it a raise for yourself, and here is the class to show you how: 
Set up a separate email account for coupons and manufacturer bulletins. In this manner, you can keep your investment funds separate from your personal or work email. Visit the websites of your favorite stores and manufacturers, and opt for their pamphlets. You can also choose the Askmeoffers daily deals and latest offers to save the most money on your purchases.
Save all of the weekly supermarket advertisements that arrive in the mail
When you have all of your materials, set aside 30 minutes each week to sit down and plan dinners based on store deals and coupons. In an ideal world, you should do this on the day that store advertisements arrive at the post office.
Visit CouponsABC & Askmeoffers to get discount coupons and deals, or save them directly to your store loyalty card. This is also the time to check your investment funds' email for any great deals that week. Similarly, keep an eye out for additional coupons in local newspapers and magazines. A definitive goal is to find coupons that you can use on discounted items, because this means you are streamlining your investment funds. Try to incorporate a number of these tips into your weekly menu.
If an item is on sale but out of stock, stores will usually give you a postponement to get it sometime in the not-too-distant future. A few stores will also allow you to postpone your coupon. If your coupon is about to expire but the item is out of stock, ask if they can stamp or sign it for you so you can use it later.
Recognize the deal cycle
A lot of stores use staples like paper products, cereal, and bread at rock-bottom prices to entice you into their store. If you pay attention to the store cycles, you might notice some designs—frequently, the most recent 12 weeks. If your coupons won't scan or a clerk is hesitant to accept them, don't be afraid to yell or ask for a supervisor. When you go shopping, it can also be beneficial to have a store's coupon strategy with you.
Let them know if you truly adore a particular item or manufacturer. Send them an email explaining why you like their product and asking if they have any coupons. It can't do any harm to try it.
To improve your savings even more
Make your investment funds more efficient. Assume you print two identical coupons for peanut butter, but they each say "one coupon for every buy." Generally, this means you can't use both coupons on the same container of peanut butter, but if you needed to buy two, you might be able to use one coupon for each in the same transaction.
When you make an online purchase, always look for a valid coupon code. Basically, you'll be able to find free transportation on a regular basis. You can also stack coupon codes at specific online stores, but this must generally be for various types of arrangements. For example, you could use a free delivery coupon code in addition to a 20% off code, but you couldn't use a 15% off code on top of a 20% off code.
References:
What is the best way to use a coupon code?
Is it safe to use promotional codes?