I studied SLA for English today.
I read "第二言語習得論に基づく,もっとも効率的な英語学習法", from location (kindle) 1 to 1465.
It was very interesting, and I bought "マーフィーのケンブリッジ英文法(初級編)" to learn the core of English grammer.
I will recieve its book tomorrow evening.
I'm looking forward to it from now on.