If you want to create the ads in Goggle, you should open account in Google Adwords.
Start some research on keywords, create relevant eye-catching ads, and manage the bidding so it would be effective and bring leads to you.
If You want to start PPC campaign in google(Pay-Per-Click Advertising)
just Visit At Google search Engine & Start what you want..I think you can learn how to setup Or start a camping from As a new Advertiser.This would be so awesome to go see!...You can get started with Google AdWords on your own from your home.
To start PPC campign you first need to create account on google adwords. Before starting campign you need to do Keyword research. Also make ad groups for your campign and find related keywords for each ad group and make one ad copy for each ad group. After this you can set campign using your google adwords account.
I Suggest before going to to start the PPC for your busineess kindly link your Adword account to Analytic account and analytic account to Webmaster account. IF you didn't have one created each and linked them.
Analyse your Site, use GOogle keyword tool to view which keyword will suits your website traffic. In beginign try to used less competitive keyword while not fully that only. Use hight competitive keyword as well to get more chance of your PR improvement hence Orgnainc search improvement. PPC in adword has much to show.
Create a campaing in Adword. In that Camapaing make diffrent ad groups - these based on the similarities of ads. In the Adgroup use the new ad and try it out to get online.
After you ad is online try to get which keyword getting more clicks, which have more CTR and work out well.Leave not working keywords. Continues it...........