For the highest value SEO tactics to really grow your site or impress your boss are the following:
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1. Join the Do Follow Backlink group on facebook and add links where they say at least 1-5 times per week"
https://www.facebook.com/groups/1180649018749577/ 

Make sure you add value to the group, and that you aren't just taking the massive amount of value that the community provides.  If you invite your staff in the group, like I have, make sure they're also providing value to the group. 

Our SEO Specialist Venus has added plenty of our own do follow link strategies, with instructions, and also used this group to build our lead generation sites and projects: Pueblo Concrete Contractors LLC, Santa Fe Carpet Installers, Denver Concrete Contractors, and Tallahassee Florida Concrete. Feel free to ask us questions about how we make money on those sites after leaving a 5 star review ;)

2. Register your business in the directories (Yelp, FB, Instagram, etc. and more and add a bit of content. Many of these links will be nofollow, but make sure to add the address, and Google will begin to send your more traffic around that geographic area.

We don't work with any clients that aren't close friends at this point.  But you can see some of the logos of sites that we used to help clients register in that would move the SEO needle for your clients site here.