I'm going to talk about saving money with investment in stock. DO you have invested in stock? show me your hand, please. Ok, I move you to saving money with stock investment. this is graph the number of investor in capital market. you can see, the number of investor have trend higher every years since 2009 to sep 2014. So if you want to save money with stock investment. you must have three basic knowledges, first, proper with persons, second, profits and finally, risk of variance price's stock. let start with proper with persons. This saving method is so popular for retirement people. Because they would like to save money after retirement. however,it suits with people that have standing money or savings. This money for investment will not combine personal expense and money in the future. Next part is profit. profit of stock investment have two form. they will get dividend when company have capital gain. They will get interest when they invest the bond. Finally, risk of variance price's stock have three factors. It include economy, industries and operating result of company. If three factor is good, price's stock will have more value. So to conclusion, basic of knowledge before investment are suitable persons, benefits and danger of variability price's share. Every investor will receive high benefit and low risks if they bring these knowledge that apply to yourself.