One market at a time: what it asks you to predict, how it settles, and when it is worth playing rather than the obvious alternative. These are reference pages, written to be read once before you use a market for the first time and returned to when a settlement surprises you.
The pattern worth knowing before you read any of them is that markets differ less in difficulty than in margin. Add up the implied probabilities of every outcome and the total always exceeds 100%; the excess is the operator’s cut. On a three-way result in a big league it runs to 4-6%. On correct score or first goalscorer it is several times that. A market is not bad because it is hard to call — it is expensive because the price you are offered is further from the true one.
The second thing that separates these pages from each other is the settlement rule, which belongs to the operator and not to the sport. Whether an unused substitute voids a goalscorer bet, what happens to a card market if the match is abandoned at 80 minutes, how a non-runner affects a race bet: these are written in the terms, they differ between sites, and they decide more outcomes than any prediction does.
The full grouped index is in type of bets; how prices move and where the margin hides is in betting odds explained, and the operators that carry the deepest market lists are compared in online bookmakers.