I'm a 19 year old student and I have a part-time job as a programmer. I make 20 euros an hour and I work about 10-15 hours a week, depending on school responsibilities. I earn 800 euros a month, sometimes more.
My monthly expenses are about 500 euros. If I deduct another 150 a month for unexpected expenses such as a broken washer, I'm left with 150 euros to spend on whatever.
I'm aware that 150 euros a month for unexpected events is not a lot but I have enough money saved up so that I won't run into any trouble if I have multiple unexpected expenses. So I thought I would continue to slowly add more money to the unexpected expenses pile.
What would be the best way to use my left over money? Should I invest the money or should I just save it on my bank account?
If the answer is invest, since I've never done this before, could you please recommend a book or an article that I could use to inform myself on how to invest?