Categorize big information in smaller parts and then learn each part. For example, if you need to learn 50 words, you can devide them in 5 groups that have similar specification (clothes, technologies, animals, etc.). It is much easier to learn 5 normal sized lists that the big one. You can do the same for phone numbers. For example, if the number is 483974680 it's easier to remember it in 4 parts 48 397 46 80.
They make learning words more fun and effective. You can write them yourself or just use this free service with a lot of mnemonics in different languages.
Any information needs some time of your focused attention to be remembered. So just don't hurry and be concentrated on things and actions that you need to remember. It works for everything: for names and faces of people, for new words, for where you put your keys when you come home, for remembering that you turned off the gas before leaving, etc.
This way you will use 3 perception channels at once: you will write it, you will read it and you will say it. Don't forget to be concentrated as well, it will give you more chances to remember the information.
If you need to remember something, relate it with something you already know. For example, you've just met a girl named Kate, even if you don't have any other friends with the same name, you may know the actress named Kate Winslet, relate them mentally and the next time you see her Kate Winslet's face will apear in your mind and you will remember the name. Or if you have to remember a phone number, look at the numbers closely, maybe some of them remind you of something. For example the number is 1251587, 12 is your shoe size and 87 is the year when your brother was born, it will help you to remember the whole number.
Make notes to yourself and put them to places that catch your eye often. Those can be walls in your room, fridge, etc. You will see the information from your notes often, so you won't forget it.
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