Fiverr
Fiverr is an online marketplace of freelancers who can give you various services.
On Fiverr, you can get anything from graphic design, writing, programming, marketing, and more.
Fiverr Gigs
A "Gig" is a service that somebody is offering on Fiverr. Each Gig has a price, a turnaround time, and the details of what you will get.
For example, a Gig could offer a unique logo for your store with a turnaround time of 5 days for $10.
Beware of "Too Good to be True"
You will find many Gigs on Fiverr that promise a lot for very little money.
Reviews can be faked, results can be exaggerated, and if you think it is too good to be true... it probably is.
Be especially careful of SEO services, as they can do more harm to your stores than good.