Bonsai plants (Growing them from seeds)?

I just bought some Bonsai seeds, and with the seeds came some very complex instructions. I was actually sent three pamphlets, saying three different things and don't know what to do. I want to know from someone who has experience in growing these trees if these instructions are a must, or if there simply suggestions, or if I can just them in Pete moss and start growing them. I have Chinese Zelkova, Japanese Zelkova, Amur Maple, and Trident Maple seeds. The instructions talk about stratification Cold/Hot. For all the seeds it says to put them in hot tap water over night. Then it says put the seeds in the refrigerator for 60 days. Then some of the other instructions say stratification in the refrigerator isn't necessary. Than the other instructions say to place the seed in a clear plastic bag filled with moist but not wet coir, composed of bark, or a mix of equal parts of the above with coarse sand, perlite or vermiculite and seal the bag. Chill seeds int he refrigerator, keep at 40 degrees, for 20 weeks, depending on the species.