最初が肝心。 Starting off on the right foot (fingers in my case?) is essential.

ギター弾き始め：
私の今年2019のギター弾き始め、練習始めは昨日一月一日、「アルハンブラの思い出」（F. タレガ）と「くるみ割り人形」（P. チャイコフスキー）でした。
First guitar playing of the year:
My first guitar playing and practicing yesterday on January 1st, 2019 was for Recuerdos de la Alhambra by Tarrega and The Nutcracker by Tchaikovsky.