Weather

There is an old song that says "Weather it's cold or weather it's hot, we're going to have weather, weather or not. Now weather we get, the weather we want, we're going to have weather, weather or not." Since we're going to have weather, and you are planning to sail on an ocean it is a good idea to learn about weather and weather forecasting. I assure you, your life depends on it. Weather forecasting is something you can learn about now and start putting it to practice every day till you sail off on your adventure. You really just need to understand how the weather affects you and your plan, as long as that plan is cast in Jell-o there is "no problema".  There are any number of weather services that will devise custom plans for you whereever you are in the world and email them to you, so you really don't need to have a degree in Meteorology, just subscribe to a service and you will be good. 
Books
On-line Weather Maps
Links