for travelers to keep it simple.
lots of internet
mobile phones with signal from the land most will give internet access.
computer dongle works like a mobile phone
and will connect to local mobile network.
satelite phone,works like a mobile but coverage at sea most of the time,expensive,and slow internet connnection.
or hf /mf radio
need a licence,but can talk to other yachts and land stations.
also using a modem
can be used to send and recieve short emails.
hope this helps and welcome to cf