Tsukuri-obi, aka Bunka-obi, Keisou-obi, and Nibushiki-obi.

This is very useful, easy to wear.
Not only for the young biginners, elder people likes to use this type.
Because it is hard to tie the Obi with strength for them.

These Obi I upload here are backparts of Nagoya-obi for casual use.
Some of those has wire part, to attach to obi-belt.
I have a tsukuri-obi for Yukata, too^^

-informations-

Fukuro-obi
Height 30cm
Length 4m
Fukuro, the word literally means "Sack/Bag".
This is the Obi for formal and semi-formal occassion.

Nagoya-obi
Height 30cm
Length 3.6m
Nagoya, is the name of the city.
It is easier to tie than the formal Fukuro Obi.
You can wear this type on formal occassion, but depends on the design, material, and its class.