If possible, define and document each internal process, say, define a service/product blueprint. Why? you may standardize business processes and when your business grows bigger, you'll hire someone and each person hired can do things in a desirable way.
Stick with down-to-earth business theories and techniques only, some of those theories and techniques you have learned are NOT for small businesses.
Capitalize on every online marketing opportunity, if you have a website, try having search engine optimization (some techniques in planning and executing how keywords related to your products/services are scattered in each paragraph, each post and each webpage section across your website), you can do some research about search engine optimization and do it yourself, it is not that hard. With search engine optimization, you may save a lot $ from online marketing because organic searches can probably bump you up onto top of the page. Also, use hashtags to post on IG and FB.
Microsoft Office Accounting Express was free back then, but don't know if it is still now. Full package, very simple but powerful accounting software to keep your books. If this software is not available anymore, find something similar.
Add value to your customers, do a little bit more for them so they can feel what receives from you exceeds face value of money paid.
Have all of your computers and phones backed-up regularly. I paid a steep price before.
These are what I have learned along my adventure (am still learning)
Again, best of luck to you!
Ohhhh thanks for all your great advice! I'm also in small business so understand how the business education MUST be secondary to the traditional business theories.
I'll look more into SEO and increase our hashtag use. We could definitely benefit from this.
I'll also back up my phone today! Our servers are backed up but I saw the little warning on my phone that it wasn't backed up and I've been ignoring it.
We love our clients, we'll keep on spoiling them!
Thanks again for your comment. I've followed you.