Do not type. Open the PDF on your screen, take a physical notebook, and write each vocabulary word ten times. Korean retention is heavily dependent on muscle memory.
If you want a legitimate PDF without violating copyright, here are your options: Active Korean 1.pdf
The book begins with Hangeul: consonants (ㄱ, ㄴ, ㄷ, etc.) and vowels (ㅏ, ㅑ, ㅓ, etc.). You’ll practice syllable blocks (e.g., ㄱ + ㅏ = 가) and basic reading rules. Do not type