I agree with what my fellow experts have already said however i will add one more thing.
Whilst i like a few of the templates from some of the websites i find that they are generic and everyone uses them. That for me does not give me the flair, style and uniqueness that i want to convey.
For that reason I have been doing something different. I have already authored 2 books and what I did was got a graphic artist to design my own image that I have created. That way I own the copyright , have my own brand and have the option to tweek it accordingly.
When I do that i actually feel that I have accomplished something and that my brand has a stamp on the internet.
Since your business is going to be ongoing and will gain momentum why not get a software like Adobe Indesign and make yourself flexible to learning. I am trying my hand at that myself