Heroes of Newerth Reborn has 7 different roles in which you may be assigned when you join to play a ranked match.  Once you get to the hero selection screen, you will see which role you are assigned both in the chat, as well as the icon next to your name on your player tab within the lobby.

It is important you play the role you are assigned to not only ensure the greatest chance at success for your team to win, but also to prevent creating a toxic game environment which may also result in an account suspension in some cases.

Vision is very important in a game of Heroes of Newerth Reborn to help determine what your next best move may be, or to keep eyes on the opposition.  There are currently a couple ways that everyone has access to in HoN Reborn that provides vision in select locations on the map including the following:

Ward of Sight - Can be purchased from the store for free, has a specific limit amount that is refreshed every two minutes.  Wards of Sight are stealthed by default, and provides vision around an area when placed, however it can be affected by terrain.  There are specific locations on the map that have a high vantage point and are labeled as such, in which a Ward of Sight placement will provide maximum vision in that area.

 

Ward of Revelation - Can also be purchased from the store for a small amount of gold (and also has a specific limit that refreshes every two minutes). Wards of Revelation are also stealthed and primarily acts as a means to reveal other stealthed units (including stealthed heroes, and other Wards) within a particular radius.

Raven - The Raven is an ability that every hero has and can be used to send a Raven out to a select tree on the map.  Once the Raven reaches the tree after a short travel time, it will continue to provide sight around the tree for a duration or until the tree/Raven is destroyed.

While your hero is not near an item shop (in general), you can buy items & they will go into the courier stash.

 

You can then press the tilde ` button to activate the Courier & have it spawn from your ally well and move towards your main hero to deliver your items. Once your courier reaches your hero, by default it will attempt to auto-deliver any items from the courier stash to your hero's inventory, and then return to your ally well by default. You can however issue it to move towards you again & have it follow you until you order it to go back to your ally well.

 

While your courier is following your main hero, you can transfer items from your hero to the courier stash & have it return back to base.

 

Enemies can attack your courier to force it to return to your ally well. Your courier will no longer be available for use until it has returned to your ally well.

By default, your team cannot see units that are on a higher elevation than yours, unless you have vision of that area from an equal or higher elevation.

 

There are some exceptions to this behaviour though: