If you are a begginner contact your local Bee Assoc. and join. They will give you all sorts of valuable info.
My local bee assoc. is basically a bunch of bee keepers of every scale...1 hive to 300+ hives...that like to get together on occasion (called meetings) and bring food and chat and laugh and learn from one another...kind of like byc.
I started out with carnolian bees...more docile.
Then worked my way up to Italian.
Bees are happy as long as they have flowers to polinate and it's not a rainy day.
If the necter flow is nil to none and/ or it's rainy...then you have grumpy bees that will protect their stores of honey.
But I have learned they are easier to work with than most people think.
I don't know about top bar hives but mine are in supers. Boxes stacked on boxes. The bottom boxes were for the brood and the queen, then a queen excluder (grate that queen can't fit her body through but workers can), and the top boxes or supers were for the honey.
dadant is a well known and respected company to shop for honey supplies.
http://www.dadant.com/
me,
g