inter-island
Aran Direct (http://www.aranislandferr...) runs inter-island ferries during the peak season, but for most of the year the only way to get between islands is to return to Ros an MhÃl and take a different boat out. Most Doolin based ferries (http://www.aranisland.inf...) now travel between all Islands during the summer season. Aer Ãrann (http://www.aerarannislands.ie/) flights do operate between the islands, though they run a circular route and may not go directly where you want to.
talk
All three islands are GaeltachtaÃ, areas of Ireland where Irish is still the primary language. English speakers will have no problem, as almost all islanders are fluent in English. However, surprisingly few signs are in English, so it's best to know the Irish name of your destination. The islanders are a friendly if insular group of people if you need to ask for directions.