First and foremost, I would advise you to make sure you are financially prepared before you set out to study in Germany. Otherwise, you will run into a whole lot of problems. Most part-time jobs alone will not be enough to cover your monthly expenses and most embassies would like to see 8,640 euros in a blocked account in Germany to make sure you are not stranded. With that being said, the other ways you can prove that you have sufficient financial resources are:
• recognized scholarships that are funded through German resources in particular
• providing a deposit from someone living in Germany who guarantees the Foreigners' Office that they will finance your stay
• providing a bank guarantee from a bank institute in Germany
• if accepted, presenting a proof of your parents' income in the home country
Please note that the above alternatives to the blocked account do not apply to all embassies and you must, therefore, contact the embassy in your home country to make sure they accept some of these alternatives to the blocked account.