If you are looking to Buy bitcoin with fiat money, then the methods available will differ based on a few factors:
Where are you located (country)?
How much are you looking to buy?
What payment methods do you have available?
How soon do you need access to the proceeds?
Is financial privacy important?
You indicated Euro currency, so presumably you are in a EU country. You also indicate you are looking for just a small amount of bitcoin.
Here’s a useful comparison of exchanges in which you can filter on payment method:
First time buyers may like the convenience of an online store that sells bitcoin and accepts debit and/or credit card. (e.g., Rebiton [NO-KYC], CoinCorner [💳] [NO-KYC when £900 or less], CEX.io, Coinify, Jubiter, Bittylicious, BitIreland, Kuna.io Money, LiteBit.eu, Conio.com, GetSatsoshi.org (⚡), Cash App and CoinMama). You can buy BTC on Cash App without ID but you won’t be able to withdraw them until you are KYC verified.
There are physical locations where there are Bitcoin ATMs and other vending/voucher methods.
You can purchase online using a No-KYC online store, paying by depositing cash in a bank account or through Moneygram/Western Union:
Otherwise, an in-person cash trade or an online trade using a P2P trading exchange may possibly be your next best option:
P2P Trading exchanges
Using gift cards, there is CardCoins for paying with a non-reloadable, prepaid GIFT card (VISA/Mastercard/AMEX/Discover), CryptoVoucher.io for paying with gift cards for numerous brands, and BitOf for paying with Amazon UK gift cards).
There’s always the friends and family methods. Someone you know probably holds bitcoin and would be willing to help you out by selling to you.
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