Create/Manage a PPC Campaign

I set up google adwords account myself for my website . my website provides online Australian Business Registration Service -- ( the individual or entity who want to start a business -enter info in my website & then pay me )- I will then register Business Number for them . I create google adwords account myself, but seems something wrong --- so far there are 200 clicks and cost me 114 AUD, but there is none finally pay me the service . I feel like there is something wrong for my google adwords, I want to find some google specilist to look after my google accounts and maybe create a campaign. also, anyone can answer my question will be appreciated : 1. do I need SEO together with googl adwords ? 2. I even create google adwords, my website still not on top - what`s the reason ? ( is that because I need put google campaign ? 3. If I use google campaign , how can I ensure to earn profit , for example, my current charge is $ 49 per service, if I put google campaign $ 2 per click, they click 30 times, and get one to pay me, I will in loss !