It doesn't make a difference if you are just starting out in pool. Both games are fun and can be played competitively, but the 9-ball game offers more winning chances. It is important to think about your own style and your game skill to decide which of the two you prefer.
Playing 8 ball is great for beginners or those who just want to have fun. The game is much easier than 9-ball and you will have more opportunities to take shots. But the game is more challenging than you may have experienced. It is important to know all the rules.
With regard to the 8 ball you need to know how to make a play, when to put it in a pocket and when to let it go. If you wish to run out, you must first keep all the balls in your pocket, then grab the 8-ball. It may be necessary to make at least a few pocket shots depending on the tournament. However, you should be able hit the 8 ball in as little as one shot.
There are many similarities in 8 ball and 9 ball. The 9 ball can be played with slop or a triangle to guide the balls. However, you cannot pocket any ball on a 9 ball. You can only make a few shots on a 9 ball. The "Golden Break" is one shot that will allow you to win the game regardless of how many balls you have previously played.
You can take the Golden Break right after you have made your break. You can win the game if you hit the shot. However, you will need to have good feel for the cue ball, or you may be in for a rude awakening. If you don't, it will be difficult to make the 8 ball. While the rules for 8-ball will vary, in general you need to be exact with your shots. This game isn't as forgiving as you might think.
The major difference between the two is that 9 and 8 ball are a bit more difficult to master than 9 ball. But it is harder to master. There are many national bodies that regulate 8 ball. If you don't know what they are, you should read them before you play. You should also keep in mind that the rules of 8 ball are a little bit different from those of 9 ball.