You cannot afford not to invest your money. Just get the basic necessities at the start. Learn to spread your money so that you will be able to operate your business until it really takes off. Learn to prioritize your financial investment. People are the beginning and the end of every business.
People are our most important resource.
Products do not mean potential sales. You have potential sales only if there are people who sell and people who buy. You can have a whole storehouse of the best products, but if you do not have people to sell them to, you're stuck with them. Even if you have excellent products, people may still not buy from you, if they don't feel good about you, if you have the wrong attitude, or if making the sale and grabbing the money are all you are interested in. A wrong attitude to people, is a wrong attitude towards your business.