There are many different types of garden hoes to work with in many different kinds of gardens. Depending on your soil and what kind of garden you have will decide what hoe is best for you to use.
A garden that has lots of small places that need to be weeded would benefit at having a sharp pointed garden hoe. The pointed hoe can fit into small spaces and pull out unwanted weeds. You can get a sharp hoe between plants and not damage them and you can put your sharp hoe in between rocks to get at weeds growing between them. A sharp hoe can be beneficial in just about any garden to get into tight spots and it can help limit weeding by hand.
The regular type of hoe has a flat surface about six inches long. This is the typical garden hoe that most people think about when they have a hoe in mind. It can hoe a spot about six inches wide in one swipe. This is a good hoe to have but it can not weed into sight spaces yet it is the most popular hoe to use in every garden.
A wire hoe has a simple sharp wire that is about six inches in width. This hoe can dig under the soil and break off roots without pulling them up. You can use this hoe in a spot that is very weedy where it is easier to actually cut off roots them pull them up. It is good for gardens that are just starting from a weedy or grassy patch.
A hoe with a short handle is used for gardens that are small like a raised bed that does not need much hoeing. This way when you are on your hands and knees you will not have a long handle in your way.
A hoe with four tines on it can be good for big weeds that need to be pulled out of the soil. This is a hoe that has a long handle and can be good for large gardens with some big weeds that need to be removed.
The smaller the hoe head is the easier it is to actually weed with. A side blade can be good for weeding large areas but it can be more difficult to use if you are not strong. There are many types of hoes for many different gardens. You can view them at https://www.google.com/search?q=garden+hoe+types&es_sm=93&tbm=isch&tbo=u&source=univ&sa=X&ei=ffyNU8TkMZSlyATg-4HgDg&sqi=2&ved=0CEMQsAQ&biw=1093&bih=534.