I think you mean Adwords? Anyway, it's not something that most people can just "jump into" and do well at. You need to learn the ropes, so to speak. I suggest doing a lot of reading on the subject in forums and blogs. Maybe even buy a course. It will take some testing, trial, and error. But you can do it!
Make a better plan first and set your goals. You should research a lot before spending your money. Split test with different products and different traffic source . You will fail initially but you will learn eventually. Finally success is certain. The point is don't lose hope.Good Luck !
Adwords do not gives you money back guarantee or surety of sales.Its the way you handle your PPC campaign is what makes you successful. I have tried two guys to work for me as I do not know much about SEM but today I am working myself on it and successful.getting sales every second day.Manage it effectively is one answer for making your money worth.
There are so many factors with Adwords, how well your site is built, are you targeting the right keywords or terms and then price points. I know from experience that using adwords on an ecommerce site takes a ton of testing and work. Definitely something you can't just 'jump' into.
Google has a certification program where you can learn to master Adwords and also take a test to get Google Adwords certified and its free! Heres the link http://www.google.com/intl/en/adwords/professionals/
AdSense pays me. If you are paying them, you are doing it wrong, lol. As for AdWords, you really need to target your audience/keywords and stick to a budget.
Adsense works fine only when quality content is consistently produced on the site where the ads are placed. Get quality traffic, place relevant ads and hence get the clicks needed to make revenue.
Your questions is about adsense or adword?? If adsense then work more, drive traffic for your website more and more naturally people will come and click on your ads..right??
I think you should learn about how adwords works best. I suggest you to read about adwords. If you know how to use adwords you will be able to reduce your spending on advertisement otherwise adwords eats money very fast
In PPC (adwords), you need to test the products/keywords first, if the keywords/products are giving you money then you can spend more.