I began my Googele Adwords about a week ago and have got over 80 clicks.But nobody would buy my products. How can I get it more effective.PS:my online store was just started weeks ago.
You are not the first to ask this kind of question. It is so vague it's impossible to answer. You first need to have very focused keywords. If you have some that are too vague, you'll get less qualified traffic. Your landing page has to do it's job and sell. If all you have is a picture of the product with no description that compels the reader to want to buy it, they won't buy it. The landing page has to be the right one. If you send everybody to the home page and expect them to search, they won't. 80 visitors is not enough data, not when the average site conversion rate is 1.5%. But if you have proper keywords, great ads and sales page, you could reach 10% and more. Most people won't buy right away as well unless it's something that is needed immediately.
Choose your keywords carefully. The Google Adwords Keyword Tool helps you to evaluate on the search traffic, competition, trends, etc of the keywords you have chosen. Also, remember you have to be specific with the keywords. You wouldn't be using "Dog Training" only for example, but you have to make it simpler like "Training for Aggressive Dogs" so you'll also get lesser competition but would still have good amount of searches and trends. You could use the Adwords Keyword Tool from here: https://adwords.google.com/select/KeywordToolExternal?forceLegacy=true