I’ve only been doing this for a few months, so please take my advice with a grain of salt. It is really important (I so wish I did this at your stage) to understand the types of brokers there are, and what the pros and cons are. It really comes down to understanding the difference between market makers (who create the market for your trades) versus ECN brokers. There is a lot that has been written about both types. I believe that brokers are required to disclose the number of accounts they have and the percentage profitable vs not. You really want to assemble a list of questions and investigate because you will learn a lot. There is a book I found helpful called ‘All About Forex Trading’ by John Jagerson and S. Wade Hansen. I use one of the well known market makers, and find they have very good software, good classes, and are usually helpful. If I make a lot of money and do this for a living at some point, I would probably switch to one of the large well known banks like Deutsche.
Welcome to forex world, there are some brokers who allow to open account with € 100 or $ 100 or even less (micro account). You should choose regulated broker who allows the same, check 100 Forex Brokers, you can find various brokers who can meet your needs.