There are several cryptocurrency trading platforms in Reykjavik, Iceland that cater to both beginner and experienced traders. Some of the popular platforms include:

1. Binance: Binance is one of the largest cryptocurrency exchanges in the world and offers a wide range of trading pairs and features for users. It is known for its low fees and user-friendly interface.

2. Coinbase: Coinbase is another popular cryptocurrency exchange that is widely used by beginners due to its simple and intuitive platform. It offers a variety of cryptocurrencies for trading and has a strong reputation for security.

3. Kraken: Kraken is a well-established cryptocurrency exchange that offers a wide range of trading pairs and advanced trading features for experienced traders. It is known for its strong security measures and high liquidity.

4. Bitstamp: Bitstamp is one of the longest-running cryptocurrency exchanges in the industry and offers a variety of trading pairs and features for users. It is known for its transparent fee structure and strong security measures.

5. Gemini: Gemini is a regulated cryptocurrency exchange that is popular among institutional investors and traders. It offers a variety of trading pairs and features, as well as strong security measures to protect user funds.

These are just a few of the cryptocurrency trading platforms available in Reykjavik, Iceland. It is important to research each platform and consider factors such as fees, security, liquidity, and available trading pairs before choosing one to trade on.