New and don't know where to begin

Dear Warriors,
I am a web designer by profession and have built sales pages and optin forms for my clients, and they paid good amounts for it, which means they are making money out of it.

I went through google and all and tried to learn the tricks of the trade but i don't think i get it.

So as a beginner, where do you suggest i should start, how do i drive traffic, if i was to sell my own services as a web designer or a form designer and developer, how do i get leads, generate traffic and all.

I am looking to make a sustainable income on the side along with my core work web design and development work.

Products so far i have, an ebook, related to finance, a finance related program, that offers the following:

1. I build a landing/sales page
2. I offer 3 unique landing page designs that a client can choose from
3. I include the 100 digital cards so that the client can give them a link to the landing page, and their business summary
4. I charge a fee of $2,299 per client
5. I host the landing page for 90 days at no additional cost
6. I use that book I wrote for both content and as a tool for the client to put their offering summary together.

Challenge for me is, where do i get the traffic from? How would the whole system actually work etc. trying to venture into a new arena to see if something can work for me.

Thank you.