They can’t, generally. Warlocks don’t learn spells from spellbooks, they learn them by leveling and they are granted by your patron. You could multiclass into wizard to learn spells from spellbooks, but that’s not a very good option in terms of power.
Can Warlocks use any spell?
Warlocks can swap known spells as they gain levels. 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.
Does a warlock need to prepare spells?
No, Warlocks do not have to prepare spells.
How many spells can you prepare as a warlock?
At 1st level a wizard with an intelligence of 16 can prepare 4 spells and a warlock has 2 spells known. You’re proposing giving warlocks the same number of spells known at 1st level that a wizard can prepare. At 5th level a wizard with an intelligence of 18 can prepare 9 spells and a warlock has 6 known spells.
How can a warlock learn from a spellbook?
As a warlock you don’t require a spellbook. At 1st level, you know two 1st-level spells of your choice from the warlock spell list. The Spells Known column of the Warlock table shows when you learn more warlock spells of your choice of 1st level and higher.
When do you get invocations as a warlock?
Plus – warlocks always cast their spells at the highest level possible for their level. So at 9th level, you’re casting all of your spells as 5th level spells. Plus – warlocks get invocations, some of which allow you to cast another spell once per day, and some of which are always on and can be used an infinite amount per day.
How many spells does a warlock have per short rest?
A 20th level warlock has 4 spell slots per short rest. At 2 short rests per day you’re casting 12 spells, all at 5th level, plus one spell each of levels 6, 7, 8, and 9. That’s a total output of 90 spell levels worth of spells.
How is a warlock different from a spellcaster?
Warlocks are not true spellcasters but instead know Pact Magic — they know their spells innately and gain new ones through leveling up like innate casters, but have fewer slots but regain them during short rest.
