Wanna develop complimentary digital marketing/ Growth marketing skills being in my Performance Marketing Job

Hey there I'm a fresher i have just started my job in as a performance marketer for a growth advertising agency. i like it but I wanna develop all round marketing skills and not just stick to paid ads, would like to switch into a growth management role later.

What are certain HARD SKILLS for required in growth roles ( like SEO, advance excel etc) which i should learn and feel free to recommend resources as well!

Any other suggestions is also welcomed!