Bettrends, a part of Weatherbys publishing, have produced an online betting guide to World Cup 2014 and Goal readers can win a copy (worth £15) just by entering their competition on Twitter.
The online guide breaks down every group with team previews, head-to-head analysis, key trends and group betting advice covering almost 90 pages.
There's also advice on maximising winnings and coverage of ante-post opportunities such as the Golden Boot and outright winner.
Hosts Brazil remain the favourites at around 11/4 (3.75) with Argentina next in the market at 9/2 (5.50). Germany (6/1), Spain (13/2) and Belgium (18/1) come next in the betting.
If you want to sample the kind of analysis that the guide will provide, including examining a range of statistics, historical data and trends, take a look at their free preview of Group A here.
To be in with a chance of winning a copy, just log onto Twitter, follow @bettrends then retweet this tweet. Entries will be accepted until midnight on June 5. The winners will be notified by bettrends on June 6.