Beginners dilemma...

Newbie sa freediving po and planning to deepen my knowledge sa hobby na to. Anong magandang investment for the gears po and may recommendation po kayo for budget-friendly po (mask, fins and etc).

Anong next course ang need ko itake after ng intro to freediving. I want to polish my depth, finning ang equalization techniques po.
Any Diving school recommendation po? TIA