Not sure what harbor freight is selling. I am sure you will need to sharpen them. so some good water stones or Arkansas stones or diamond stones and a good strop.
Good quality inexpensive tools
Flexcut
Ramelson
Warren
They are other good brands but much more expensive
Pfeil
Stuby
Ashley Isles
2 Cherries
Acorn by Henry Taylor
A good quality knife These sell for usually under $15
Murphy
Flexcut
Warren
Exacto the one that has a screwdriver looking handle and can interchange the blades think Wal Mart or Hobby loby sels in a kit for around $15
Lots of good quality carving knives but the prices are more expensive than these
Check out Little Shavers Rick carries good quality and prices are good
http://www.littleshavers.com/index.html
Another good supplier with good quality and good prices
http://thewoodcraftshop.com/
call them and ask them to send you a catalog their on line catalog is hard to navigate but you are young and probably better with computers than most us older folks
Both of these are great suppliers and carry a wide variety of carving books.
Rick at little shavers is a member on this site
See if there is a carving club in your area
go to the carving club meetings
Carvers in the club will be glad to help you
and probably have soome books and patterns
Lots of different types of carving
I do a few wood spirits mostly on walking sticks
carving in the round Santa etc
a little relief
some animals
Ask any questions you might have
Someone here will probably know the answer
Tell us where you are
Someone here might live near you or could tell you about a carving club near you