Who can explain to me how the American presidentials work?

Caucuses:

Some states have these. Basically, people in these states meet in designated places (schools, homes, townhalls, churches, etc) to discuss the candidates. All of the people who are for one candidate get in a group together and a tally is taken. Those groups who are the largest then try to persuade the other groups who are smaller to support the more viable candidate. After a while, the most viable candidate is chosen and that candidate wins the caucus.

Caucuses and Primaries:

Primaries are a bit easier, people just cast votes and the more votes a candidate gets, the more delegates they receive. The primaries and the caucuses are about getting delegates. The more delegates you have, the more chances you have of being the party nominee. Each primariy/caucuses is held in order to see where the voters of each party stand in each state.

February 5:

This the day when most states hold their primary. So, this is the day when the party nomination is most clearly decided. (In my opinion at least).

Convention: After the primaries, all the delegates for each candidate go to the party convention to nominate the candidate for president. This is usually clear before hand from the amount of delegates each candidate has at the convention. The other point of the convention is to decide the party platform and policy, in case their party wins the general elections. This is where the delegates of other candidates come in to play, since, the more delegates you have (no matter whether or not you are the nominee), the more chances your ideas get to be put into play in the party agenda.

We have candidates that run to be the party nominees. The republicans are picking their candidate, and the democrates are picking their candidate. Each state has its party caucus (election) to see who the party supporters choose to run out of the field. Once the nominees are selected, then we have the general election where the republican nominee runs against the democrat nominee and that determines who the president is.

don't ask us,,, if you really want an answer,,, watch the news ,,, and look it up on the internet.