Here is a list of all the beginner pages you have access to:
Beginner Vocabulary – 語彙
語彙 – 挨拶 – Greetings In English
語彙 – Very Basic Travel Survival Phrases In English
Talking About – Getting Ready To Leave The House – In English
英語の初心者向け「反対語」 – Basic Opposites In English.
これらの反対を知っていますか – Some More Basic Opposites In English
秋だ – Talking about Autumn In English
ファーストフード – Basic Fast Food Vocabulary In English
飲み物について話す – Talking About Different Drinks In English
Basic English Grammar
An Introduction To English Verbs
An Introduction To Pronouns In English
An Introduction To Prepositions In English
An Introduction To Determiners In English
An Introduction To Conjunctions In English
An Introduction To Adjectives In English
An Introduction To English Adverbs
An Introduction To Nouns In English
You can upgrade to Intermediate English section once you are comfortable with the Beginner material.