Presently it's hard to tell if meta tags will help you achieve a better ranking. There are so many criteria in determining a site's placement that meta tags are never going to be ultimate factor in deciding whether your site gets placed in top ten. Some search engines do not even support meta tags.
I always like to add meta tags to my site, because I know they usually help. I also know they won't harm my chances of achieving a good listing if they're made correctly.
If you're unfamiliar with html, you might want to have someone help you add your tags to your webpages. However, it is pretty simple and you really don't even need any experience coding pages.
I suggest that you open your coding in a text editor like Notepad. You always want to place your tags in-between tags. This is what it will look like:
Your Site's Title Enter meta tags here.
Quite simple. Now you want to add your tags. I like to start with keyword tags. You should spend some time finding best keywords for your site. One great place to look is GoTo's keywords suggestion page. Type in your main keyword and it will return a large list of relevant keywords and a number of how many times term was searched in past month.
The first step you want to take is to choose a good title. Most search engines index between 80 - 120 characters, so make sure you don't go over 120. Most engines give good weight to title in determining your placement, so be certain to use your best keywords in your title. I would use one or two, but I wouldn't recommend repeating them.Keyword 1, Keyword 2
Now it's time to create your description tag. Always include title and description tags. If you don't, a title and description will be made for you and it could make your page sound unappealing. Most search engines will use about 150 - 300 characters of a description tag, so 200 characters would be a good size.
Remember that your description tag should make sense! List your main keywords, but just don't repeat them endlessly. Search engine surfers will think your site is garbage and won't visit it, and you most likely will receive a lower ranking.
Do include two, three or even four good keywords and phrases, but make sure your description still sounds normal.