How much money should I start investing, If I am new to this field?
Must better if you make some research first about cryptocurrency specially on bitcoin. Because of its high volatility and unpredictable characteristics, it takes a lot of risk that can be hard for someone to trust with it specially for new investors like you. That's why i'd like to recommend you to just invest an amount that you can afford to lose, to avoid of losing to much money in case of a sudden drop of bitcoins market.