Lane

Basic Lane
A Lane is one of three paths connecting the two strongholds, Creeps will spawn and push along this Lane until one team wins the game.

Top, Middle and Bottom Lane
There are three Lanes in between the Strongholds. There is the Top Lane (As it runs across the top of the map), Middle Lane (As it runs through the middle of the map) and Bottom Lane (As it runs across the bottom of the map)

Short, Long and Solo Lane
As players begin to play more they may hear of the "Long Lane" and the "Short Lane".

Long Lane
Long The long lane is the lane where a hero sits furthest from his/her own tower, therefore being more vulnerable to attacks and ganks by enemy heroes. Radiant: Top, Dire: Bottom.

Short Lane
The short lane is where a player can hug their own tower to reduce the chance of being sprung upon. Radiant: Bottom, Dire: Top.

Solo Lane
Solo Lane is the middle lane as it commonly played Solo, Professionally the short lane can also be a solo lane. Radiant: Middle/Short, Dire: Middle/Short.

Lane Objectives
There are four tiers of towers, three of which are stationed in each lane. The remaining tier guards the Primary Structure in each base. first tier towers are positioned closest to the river. These are the weakest of the towers (being first tier =.=) but also the most important in early game phases. After the first tower in a lane is destroyed the enemy team then has the option of attacking the next tier, positioned about half way down the lane, closer to the base. Once this tower falls the team may continue on to the third tier. This tower guards what is known as the "Rax" (or Barracks [Bar-Rax]). Once these two buildings are destroyed (after the third tier tower drops) the creeps in that lane will grow alot stronger. This allows the Rax'd lane to dominate the lesser enemy creeps and push toward the base.

Should your team destroy all 3 Rax's your creeps will become Mega Creeps. Basically they are unstoppable creeps that will eat their way to the enemy base. It's almost a guaranteed victory for your team.

Lastly the tier 4 towers that guard the primary structure. There are only 2 of these towers situated next to the most important structures in the game. Once these are taken care of there is only the final structure standing in the way of victory.