Ive got 100 euro and i want to...
Stop. Take a deep breadth. Go get some education first, on what the currency markets are all about. Get up to speed on what you need to know about this business, first. Find out what makes currency prices move. Find out who the players are and where they live/do business. Learn the stratification of the business retail, wholesale, and interbank. Find out where you fit in this business and then find yourself a good Intermediary.
You could be someone with a hundred million dollars sitting on the side, so the 100 Euros comment does not mean much. You might be just interested in learning the business. One of the beautiful things about Retail currency, is that you don't even have to risk your 100 Euros, to learn whether or not this particular market is right for you. Currency trading is not for everyone. You are enticed with massive leverage, that for many Traders is beyond what they've experienced before. However, the massive leverage available in the Retail currency market can be met with the often times, hypersonic speed of the currency market and if you are caught in the wrong direction with the wrong leverage and the wrong cost basis, you could lose a relative ton.
Gearing down leverage is one thing, but if you don't yet understand what moves this market, then the leverage you use is moot anyway. You will first need to figure out how to get into the right position at the right time and for the right reasons, with the right money management strategy in place to help off-set some risk.
The first and most important thing anyone needs to know about any trading endeavor, is how to Mitigate Risk as much as possible, before entering any position for any reason. Concern yourself with Risk Mitigation Principles first - and the rest will fall into place by definition. Learn to deal with Risk upfront, so you don't get crushed by it down the road. Profit will take care of itself, later - if and only if you have properly dealt with risk.
I (personally) would not waste a single additional moment addressing the question of how you trade 100 Euros, 1 Euro at a time. Based (solely) upon your initial question, the correct path is make your Education about this business a priority and to put Skills & Tools Development first.
If you strike out in this business without the proper Education, Skills and Tools, then you are doing yourself a huge disservice. Ask any builder or architect of any structure, what's the most important first step in construction and if they are worth their weight in salt, they will tell you
laying the proper foundation is the most vital first step of all.
And, please, stay away from Bucket Shop, PayPal, Basket Weaving Houses of inbred trade manipulation. The Broker/Intermediary that you finally select, is just as important as anything else in this business - maybe even more important these days.
Stay safe, by getting Educated!
