Some good travel guides for Cuba:

    Lonely Planet Guide.

    One of the all time favorites.

    Buy at amazon.co.uk

Insight Guide Cuba   

     Buy at Amazon UK 

    Cuba: the Rough Guide

    Buy at amazon.co.uk

    Time Out Guide Havana.   

        Buy at amazon.co.uk  

    Lonely Planet Havana.

    Buy at amazon.co.uk

Footprint Guide   

Buy at amazon.co.uk 

    Insight Instant Guide.

    Buy at amazon.co.uk

Biking.

    Bicycling Cuba.

    Buy at amazon.co.uk

Lonley PLanet Cycling Cuba 

Buy at amazon.co.uk 

Diving

    Lonely Planet Diving and Snorkeling in Cuba.

    Buy at amazon.co.uk