How do I manage to find out which type of accounting firm is the right one for me?

If you can, I recommend trying to do a couple of internships at a variety of firms. During college, I interned at a couple different types of companies and it gave me a feel of what type of company I'd want to work for (public vs private vs government). If internships aren't an option, try doing some meet and greets.

I suggest trying to get into a Big Four firm as your goal. They assist in getting you certified as a public accountant. They also have clients in all industries so you can try to move around through different clients and decide which industry you favor. They are also so large that you can go into auditing, tax, compliance, consulting, etc. so you can also choose what type of work you like. Having a Big Four firm on your resume is a plus even if you decide to go to a smaller firm, start your own business, go into government work, or move into industry.

Only you can figure out which one is truly right for you, but you should apply to all different types. Getting to know the people from the various firms or companies, seeing how you get along with them, getting a sense for what the work life is like. Are there "slow" periods, really busy periods, does everyone kind of keep to themselves, or are there social events (sporting events, happy hours, etc.) that they do together. What kinds of clients does the firm have that you might want to be assigned to, do you have any input into the assignments you might have? Are they diverse or all the same industry, does that industry sound interesting to you? Many people that go into public accounting will leave that firm and go to a client or another company from that industry as that is where you will now have experience.
Don't rule out going straight to a specific industry and by-passing the public audit experience. If you know that you want to be in high tech, insurance, telecommunications, finance/banking or whatever, don't be afraid to look at those companies as well. There's no rule saying you have to go into public accounting, but if you don't know what industry you might want to be in later, then public accounting can give you exposure to different industries.

Hello, I worked for 2 of Big Four companies (Big 5 at that time). I think you need to look at all the relevant sources of information to make the best decision.
Sources of information are:
1, your friend/school mates already working there - ask them for their opinion, likes and dislikes, this might be the most relevant source of information
2, web page of the company - is it dynamic, aggressive, trustful - you need to compare the image it sends out with your own personality - does it match you? do you like it?
3, presentation at campus, university - do you like people doing the presentation
4, hiring process - try more than 1 company to be able to compare. Focus on openness, quality of communication, etc. I went through hiring process of 3 of Big 4s, and received offer of 3, and selected based on 1- 4.
5, articles in professional literature - there are often articles about accounting firms, about their scandals, etc.
6, of course the most important might be the type of work you would be offered - if for example you want to concentrate on financial sector, but you got to know during interview, that you would work on manufacturing sector audits, then you might to try some other company.

Hope this would help you :-)

I hope this would help