Пост в Cape Verde

Hi Cape verde CSers! I´m thinking of coming to Cape Verde the 17th, flying to Sal. My questions; a. how is the transport to other islands? Are there ferries, or only flights, and what are average flight prices from Sal to other islands? b. is taking camping gear and camping on the islands, free camping or in people backyards/garden an option? c. Are there ferry or cargo boat connections to the African mainland? If anyone on any island is willing to host, please have a look at my profile, and let me know! Cheers Thomas