In my opinion, the quickest and best way to learn any language is to constantly implement it in your life. Read, speak, listen, watch the language. In easier levels, learn to read and try identify words from the language when listening. Higher levels, carry conversations and read consistently, not texts but books with harder vocab. In arabic, there is no "climax of growth", as an arab I am still always learning the language by reading new things and expanding my vocab. HOWEVER, if u feel like u want to learn something new or u are unsatisfied with ur recent progress and feel limited, i suggest exploring different dialects. Syrian arabic is different than Egyptian which is also different to moroccan. i actually have no idea what moroccans are saying LOL