Algebra and Chart No. 1
I have never taken the Basic Coastal Cruising and Bareboat Chartering courses, but i do have a 100 Ton Masters License. Charting, plotting and navigation doesnt change just because a course has a different name.If you know very basic algebra i.e. distance = rate X time and right angle triangle formula A squared + B squared = C squared, the rest is a piece of cake. For most that dont know this , they usually have a "slide rule" that i found more complicated. I have been to 'sea school', so i know the drill.Also, the link i added will also help. It is Nautical Chart 1, and has explanations of symbols as well as other useful information.The other books recommended here are also good. It depends on how much time you have to read.Good luck and enjoy