PPC is the one of the most fastest way to get traffic and leads for your website. It is a good method. It's completely paid.
i am little bit confuse for taking your question. you are looking for free SEO . there is two way to get SEO First off all if you want free SEO Then try to learn SEO. --If you want to learn SEO then start with basic of SEO.there are lots of amount data on internet relevant to SEO by which you can learn. Second thing is that invest some money for SEO of your website. for this you can do--------- 'go to search engine and search seo company. contact them for seo, at this time one thing you should keep in mind if a company comes up at top position. that means it a better company it is not possible you can pick a company by it's services .