It is important that whichever match you are placing a bet on has enough information available on the Internet, newspapers or other media. I prefer the Internet as a source of information because it provides the most updated information. For this reason, you should concentrate on the league that you are familiar with. The highest profile leagues are: English Premier League (EPL), Spanish La Liga, Italy Serie A, German Bundesliga and French Ligue in this order. The English Championship League has also gain much popularity these days.
A lot of media coverage and information are also available for the UEFA Champion League, UEFA Cup, European Cup and World Cup. However, these pit together teams from different countries that have not played against each other for some time, as well as little known of the team which is usually the underdog, whereby little information is available about them but they have improved considerably since the last time they surface. Example: Belgium compare to a decade ago. Nevertheless, opportunities occur everywhere. Hence, if you know enough about some of these little heard teams, you may want to try your hand at some of these matches. (Another place you may want to place some bets on would be your local league, since you would likely to have access to more information on this compared to those living in another corner of the world.)
In many cases, analysing information and predicting soccer match results require time for research as well as to think about the information you collect. I personally developed a few ways to select a good pick without spending days on research. Ultimately everyone just wants a single result: WIN. Do not spread your stakes too thinly on too many matches as it is wiser to concentrate on a few matches and win them all than reduce the success rate by betting many matches.
Nevertheless, I do emphasize on responsible gaming. If you do have gambling problem, I urge you to stop reading after this sentence because by stopping, you are winning. In game of chance, there is win and lose. Problem gamblers are the ones that are not able to accept loss and therefore any technique will be utterly useless for them since ultimately, they will bet on luck for thrill and even end up losing their winning and initial capital.
Selecting a winning pick is a combination of art and science where one grows better at with practice and effort. You can get bored by it though. Becoming complacent after you won few matches will only work against yourself and NEVER EVER bet for FUN unless you can control your emotion to accept losses. For problem gambler, every dollar you lost, you have the tendency to win it back and thus you are caught in the pit trap. Don't lose your focus and treasure every win. Do adequate homework always as by being impatient and betting beyond your means will only render yourself in a state of anxiety and unable to make the correct decision.