Do not let the list intimidate you: there are just 77 reserved keywords. You do not need to memorise everything before you start. Keep this reference nearby and return to each element when you encounter it in code.
Reserved keywords
Words with a reserved meaning
Operators
Perform operations
Punctuators
Organise and separate code
77
The 77 reserved keywords
C# also has contextual keywords, such as var, async and await, whose meaning depends on where they appear. These 77 words are not 77 instructions or the whole language.
+ =
Common operators and symbols
Arithmetic
Assignment
Comparison
Logic and bits
Bit shifts
Conditions and null
Other expressions
Type checks and conversions
A visual reference, not a complete operator list. Some symbols have different roles in different contexts; the conditional operator is written ? : in an expression.