Not everyone is blessed with the natural talent to produce a melody using nothing other than their own voice. Not only that, but every genre has its own way of portraying music. There is no hard and fast rule or a rulebook that teaches you how to play the game. The game is vast with different playing fields. Each playing field might have its own set of special rules and regulations that could have nothing to do with the next. You need to keep your footing if you plan on playing in the big leagues and a couple singing tricks online could help in your endeavours.
There are a few tutorial videos available online such as breathing patterns and behaviours one can practice through in order to get a feel of how singing can be accomplished. Naturally, if you cannot control your breathing then you are unlikely to be able to control your voice and without having a feel of control over the most crucial aspect to your singing career would make have your efforts be in vain. Another tip to remember is that a common mistake amongst many singers, specifically the newer ones, is that they continue to speak from their chest. But the most important muscle to use when singing is the diaphragm.
The diaphragm itself flexes and contracts in addition to your regular breathing and in order to achieve musical prowess with your voice you have to have full mastery over the diaphragm. The extent to which it flexes must be in your control as that will allow you to grace the ears of others with your melodic singing voice that hits the high and low notes respectively. Try checking out http://singingcommunity.com for a couple of singing tricks online to help you on your way.