Wash them and let them sit in clean water for several ours, until you can remove the skins easily. Be sure to choose NON-bitter variety of the apricot's kernels, despite the bitter ones are even healthier. DOSAGE IS IMPORTANT!
Some Say they could be poisonous, but others promote it as a cancer cure. Not scientifically approved (& I tested it on myself) or maybe some conspiracy?!
What they call a poison is also known as Vitamin B17!
Wash again and put in a cup of pure water! Blend all till smooth and pour through a strainer. The rest of kernel nuts you can keep in a fridge!
However I tried it and tastes good with some sweet inside (dark brown sugar / stevia / honey / agave), which also lessens the raw taste because of the salts...
I cannot guarantee if this is true to everybody. People react differently on substances....