I would agree with you that facebook is probably the best bang for your buck,
depending on your niche. Adwords is ok, but there can be a lot of click fraud
depending on your niche again.

Today I would think the best way is doing this organically through social
media and comments to relevant blogs/articles that will drive high converting
traffic to your website. This is a reason why it is important to hover around
related websites because any crossover traffic is highly targeted.

You can pay someone to do this, but it is probably cheaper and more effective
to do this yourself as a subject matter expert.

Social media websites,relevant communities and blogging can help you to
promote your business.You can do this thing by yourself or you can hire
someone to perform this work to promote your business.

My biggest ROI was completing a free business profile on Manta which led to a
multiple six-figure contract.
Exactly the same happened to me.

I would agree with a lot of the comments it really depends on your business
an it depends on your potential clients and the way they look for your
product or service. I'm a little basis to online methods but I must say there
are a lot of grass root methods that have worked for years but we all jump to
the new cool things like social media. (Maybe it has to do with the fact it
is
easy and you can do it in your PJ's, I would not recommend door to door sales
in your PJ's)
With that said, I would say without the basic SEO foundation elements in
Place your site will never be found. I'm also a big fan of directory
advertising for businesses with locations(Google+, Yelp, etc), if you haven't
claimed your business yet do it today. Once you claim it update the info, add
photos and videos then ask your best customers to give you a review and you
will see the leads come flying in.

clarocision Research and Marketing,
I have both paid for online advertising and have done many things for free.
The best results are things I have done that were of no cost to me (aside
from occasional spam). There are tons of directories that you can list your
business online for free. I think the key to these directories is taking the
time with each listing and really filling out all the information they ask
for. They wouldn't provide a space for "Business Owners Name" if it wasn't
important. All these sites help to build authority with google and google+
local.

Social sites such as instagram, twitter, and facebook can also yield
tremendous results but the key is to stay active and be engaging. Even if you
don't know what to post, start following profiles that are similar to your
and seeing how they interact with their audience.

There are also lots of legit sites where you can post your products/servies
for free such as craigslist, ebay classifieds, facebook marketplace, etc.
Good luck!

Best way is to learn basics of SEO and start doing optimization of your
website it isn't hard.

If you want to make your own business and you have a limited budget then
using the best and ideal marketing partnership approach will allow you to
reach the same amount of potential customers using less of your own marketing
funds.

If you live in a rual area and do not intend to market beyond your immediate
geographical area, for example you are a build to spec furniture maker, then
word of mouth about the quality of your work will be your best advertising- I
have found this also works for a small local resturants. The next level for a
small population area would be the local newspaper. Yes in these rual areas
many folks still do NOT use computers for news. They still read local papers.

What is the best marketing depends on the business. Facebook can be a great
way to build a customer list by using polls and contests. Online methods such
as LinkedIn and Craigslist can generate great results. Flyers can work great
as an offline marketing method to consider.