Do you have to remember series of numbers?
Most of us do and this can be very hard for many people. This system may not be as easy as the Link and Word Peg systems, but a couple of sessions of, say, half an hour each should see you ready to start using it.
That hour of focused effort will be repaid many times over!
This system will not suit everyone. But, please take my word for it that it is easier to use than for me, or anyone, to describe to you.
In this list, just focus on the sound of the letter(s) for each of the base numbers 1 to 0.