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Read The Minimalist Budget
Read the book called The Minimalist Budget: A Practical Guide On How To Save Money, Spend Less And Live More With A Minimalist Lifestyle. There are a lot of tricks and ideas for saving money and it should help you learn how to save money. You can order it on Amazon.
Don’t try to save on everything as it can make you feel unhappy or give up very soon. All people are different and all have different priorities, so decide on what you should stop spending money and spend only on what you really should (one of the life hacks to save money).
If you ran out of money saving ideas, take a walk or go somewhere by bike, instead of driving a car all the time, if it's not too far and if the weather is well. It will keep you healthy and save your money because it's a totally free transportation method.
If you are not sure how to save money every month, be strict with your financial goals. You need to know exactly how much and how soon you want to save and also for what reasons. Write it down and reread it from time to time, and also renew the list, if you have some new ideas. It will keep you motivated for saving money.