Do you know what format of match it is? It'll differ if it's a Test Match, One Day International (ODI) or T20 match.
General rules in any format:
11 players per side. Each side plays an innings - in Test matches, each side gets two innings.
The side batting first will aim to score as many runs* as possible
The side bowling first will aim to get the batting side out by 10 wickets** and restricting them to as few runs as possible
The bowling side will bowl 'overs'. An over is where a bowler gets 6 balls to bowl at the batsman.
*Scoring/Runs
Batsmen can 'run' in between the stumps after hitting the ball. This can be any amount of runs - generally 1, 2 or 3 as the fielding side will often get the ball back to the bowler or wicket-keeper.
'Boundaries'. Two types. A four is where the batsman hits the ball and it gets to the 'boundary' on the perimeter of the pitch after hitting the ground. A six is where the ball is hit and goes over the boundary, without hitting the floor
There are also 'extras' such as wides, no balls, leg-byes.
**Wickets
Various ways to get a batsman out include:
Bowled out - the bowler hits the stumps and the bails (on top of the stumps) are removed
Leg-before-wicket - LBW - the ball hits the batsman infront of the line of the stumps without hitting the bat.
Caught out - the batsman has hit the ball and the fielder catches it without hitting the ground
Run out - the fielding side has thrown the ball to the bowler or wicket-keeper and the bails are removed, with ball in hand, before the batsman has made it back to their crease.
T20 is where you'll get the most fun and fireworks - there's more likely to be big hitting from the batsman and that's usually what excites the crowds these days. It lasts 20 overs each innings.
ODIs are 50 overs each side.
Test Matches - hold a bit more tactics and strategy and are much longer, lasting over 5 days. A purer form of cricket! The best, in my opinion!