Warlocks have a much more limited number of spell slots than all other dedicated magic classes. This means that they need to rely on their Cantrips, and at later levels, their Eldritch Invocations. At first level, Warlocks know 2 Cantrips and 2 Spells. The first Cantrip every Warlock should grab is Eldritch Blast.
Do Warlocks need components?
Yes, you are correct. Spells that require a material component can be cast only by handling that component or holding the focus. Material components with a cost or are consumed (or both) are the exception, you need specifically those components.
Why do warlocks have to prepare their spells?
In in-game logic terms they are gifts from the extraplanar being with which the Warlock has the pact. This is spelt out in the rules for Warlocks (PHB 107): The Spells Known column of the Warlock table shows when you learn more warlock spells of your choice of 1st level and higher.
What happens when you gain a level in Warlock?
Additionally, when you gain a level in this class, you can choose one of the warlock spells you know and replace it with another spell from the warlock spell list, which also must be of a level for which you have spell slots.
How many spells can you cast as a warlock?
All spellcasters, including warlocks, have a list of spells they can cast, through some combination of knowledge and preparation (the details vary by class). These spells all have levels — comprehend languages is a first-level spell, shatter is second-level, hold monster is fifth-level, etc.
What do you need to know about warlocks in DND?
Warlocks are a DnD spell casting class that was introduced in DnD 3.5 and converted into a core class for DnD 5e. The warlock is a spell caster that draws its powers from an otherworldly patron, a being of great power. This power is not given freely though and the Warlock is sworn to the patron in some way.
