начинать с(чего-либо; We would usually start off with a run, but that day our coach made up her mind to go on to work with balls at once. – Мы обычно начинали с пробежки, но в тот день наш тренер решила сразу перейти к работе с мячами. TarasZ)
начать с нуля(Second language learners are also viewed as starting not with a blank state but are already in possession of a unique human ability: the ability to use language. Cat_Nat)