Recommended exchanges to sell your received Airdrops for Bitcoin

Binance
HitBtc
Coinexchange

Cryptopia
Mercatox
Bit-Z



Recommended exchanges to sell or buy Bitcoin for fiat (Euro/Dollar)

Cex.io
LocalBitcoins
Changelly



Other useful tools

Keep your funds secure using a hardware wallet:

Ledger Nano

Track all your coin's values:

cointracking.info