If you are training in the UK between October and April, I seriously suggest you consider buying one of these warm, fleece-lined sleeping bags. The Volvo Ocean bag is brilliant, but about 5 x the price of this bag.

The Sutherland bag can be ordered on Amazon and delivered in the UK. They sell for about £60 at the time of writing.

The Clipper Race isn't a cheap activity. Therefore, it makes sense to do as much as you can to make yourself as useful as possible on the race. 

To paraphrase John F Kennedy "ask not what your crew can do for you, but what you can do for your crew". Improve your skill set!

Making yourself as knowledgable as possible means you can give more to the boat. Giving more to the boat means you get more back. It's that simple. You should read the Clipper Training manual before Level 1, especially if you are a non-sailor. In fact, if you already sail, reading the Clipper manual is probably just as important, because you'll be learning 'the Clipper way'! Ask the office for the PDF.

You need to decide what is useful to you. If you're a non-sailor just buy the Competent Crew book and knots book (or an app). Day Skipper is a bit too advanced. Before L2, reading the easy-to-read books on sail trim would be a great idea.

Level 2 is spent largely at sea. After building on level 1 training, you'll be off to experience spending time in a watch system. An ideal opportunity to put into practice sail trim and 'tweaking'. Go play! That's what you are at sea for after all.

​Team Spirit is just an interesting read. 

Level 3 concentrates on spinnaker work and race tactics. By now, learning about the weather is also a good idea. There are books produced by the RYA which cover Northern and Southern hemisphere. Dependent on which leg you are racing, consider buying and reading one. They are well illustrated and easy to read.