Keywords are very important to get your sites indexed, and give you to find the potential customers you are looking to sell to. Make sure the most important thing that you need to learn if you want to be successful online, it's take time to get good outcome. However, if you don't have time to learn,you will pay someone else to do it. If you want to find anything, you need the whole keyword phrases to get exactly what you want. Trust me, you really need to learn this stuff, don't forget to put your specific keywords in each pages on you site. Here are the most important tips to choose your keywords: 1- Use whole keyword phrases, 3 to 4 words long. 2- Use phrases near 10,000 globe searches per month. 3- Use Goolge Keyword Tracker and Wordtracker to find right keyword. 4- look for the HIGN volume and go with only LOW competition keywords phrases.
Done that, got the t-shirt ;-) I also would add to then write the absolute best web content / article for the chosen keyword phrase (and some variations of it). Many people spend hours in keyword research and then slap an article together in mere minutes ...