Yes it is! PPC and CPA is all good if you use it right. I have some guideline and information for PPC in my blog post if you ever interested in it.
I think PPC is really a good way. It requires like always in the internet marketing a lot of work and patience.
Of course! If it's properly manage and you need to learn how to budget your money on that program. Better learn how it really works and seek some advices to the PPC experts.
yes, PPC is the best way to go if you work on CPA offer but it should be direct from any famous site!
Depends on what you want to do. PPC is not as effective anymore (on Google) for list building/affiliate marketing. That doesn't mean there are not other effective PPC services out there though. If you want to use Google for PPC to your own products or affiliate marketing, I can highly recommend their "content network".
Creating an effective AdWords campaing for search requieres a mass of time and effort. * Keyword Research * Pay-Per-Click Keyword Grouping * Negative Keywords * Ad Text & Landing Page Creation
Google adwords is pretty expensive. A cheaper option could be entirewebs speedyads - similar to adwords but far more affordable.
If you'll be starting PPC, I suggest buying some vouchers at first so you won't have to invest much of your own money.
ppc is excellent but it is a big topic with a lot to learn and take in. Study it fully make sure you have knowledge and understand exactly how to use it and reap the rewards.