I believe he's asking how to make crack from his gram of coke.
add a small amount of baking soda (1/3 the amount of coke you have)...add a very small amount of water (only enough to wet the coke, drop by drop).
Heat and cook, watch the bubbling reaction.
cool the mixture by putting it in an ice bath of sorts making sure that the ice water doesn't get into your mixture, it only cools it.
remove excess water from your mixture with a paper towel or pour it off
heat mixture in oven lightly.
crack