[I have a question about finding good keywords. When I use the Google AdWords keyword tool I get the most obvious keywords, that have HUGE competition and everyone is going for. I would like to know how can I find long-tail keywords or how they are called keywords with much less competition.]
Going for “long tail” keywords, in this context, means going for many lower volume keywords in addition to your primary, higher-volume keywords.
A great way to do this is to select the “Only show ideas closely related to my search terms” checkbox. This will give you many keywords that include your primary keyword within a phrase. By optimizing for these “closely related” keywords you are simultaneously optimizing for your primary keyword.