You have two sides of 11 players. Typically, although it isn't mandatory, it just works best, there are 6 batsmen, 4 bowlers and a wicket-keeper. Although all 11 have to bat if required and sometimes batsmen bowl a bit if the bowlers are exhausted which only happens in Test matches over 5 days. In T20 it is possible that the opening batsmen have not been got out by the time the 20 overs have been bowled so the other 9 batsmen don't bat at all.
At the beginning the captains toss up and the winner can decide to bat first or bowl (field) first. Which he decides will depend on various factors associated mainly with the weather and the condition of the pitch and the fact that it is thought psychologically easier to be chasing a target rather than setting one. In day/night matches under lights there is often a dew in the second innings which makes the ball feel like a bar of wet soap and thus more difficult for the bowlers to grip it and exercise their usual fingerwork.
Interviews then take place with the two captains just off the pitch (the wicket-- which is not to be confused with the wickets the wicket-keeper keeps), because the pitch is a specially prepared piece of ground nearly in the middle of the field and is not allowed to be trodden on because it is sacred. Any necessary treading on the pitch is allowed during the game and is policed rigorously by the umpires. Pretending unnecessary treading on the pitch is necessary is deemed bad form and ungentlemanly. The captains then retire to the pavilion, which is also sacred, and, with the coach, tell the players what their plans are depending whether they are batting or fielding (bowling).
The wickets the wicket keeper keeps are two sets of three stumps made of ash-wood (I think) which are set into the ground at either end of the pitch (the wicket) 22 yards apart. The top of each stump is grooved out so that a pair of bails can rest in them which, if either or both become separated from the stumps, signify that the wicket the wicket keeper keeps is broken. Which might be significant or not depending on a number of factors. The middle stump at each end has a mini-camera in it so that the viewers can see what being bowled at looks like. Without the risks of course.
About 5 minutes before play is due to start the 11 men of the fielding side run onto to the field and limber up intimidatingly. Then they go into a bonding huddle for when the two opening batsmen are walking to the crease swinging their bats around to show they mean business. (I'll explaind the crease later on). The huddle is positioned so that the batsmen can hear the fielding side's captain tell his fastest bowler such things as "don't bowl the groiner first ball Stewie". Which doesn't mean he won't of course.
Then the ads are shown. Which neatly psychoanalyse cricket fans.
(to be continued.....)