The first are Note-Based Side Quests, which various notes you're given or otherwise find will allow you to complete more basic tasks. However, there are technically three other types of Side Quests in the game as well, and they're worth noting too.
These are usually the most robust, most difficult and longest Side Quests in the game, and ones with the greatest rewards.
The first is the official type of Side Quest, which the game will name for you and place in your Quests Log. There are four types of Side Quests covered here. Remember to visit our Main Quest Walkthrough if you're looking for more details on main quests in the game. Here, you'll find details on all of the missions the game has to offer you that aren't mandatory quests necessary to complete the game. Welcome to the Side Quests section of our Fallout: New Vegas guide.