Firstly, welcome to the forums.
Most of the essential menus in the game are in full english, so whoever's helping you read them shouldn't have any issues.
The characters in the character selection screen, arranged according to the row they appear in:
First Row: Aoko Aozaki, Tohno Shiki, Archetype Earth (blank spot if not unlocked), Nanaya Shiki, Kouma
Second Row: Miyako, Ciel, Sion, Riesbyfe, Vampire Sion, Warachia, Roa
Third Row: Hisui & Kohaku (Team), Tohno Akiha, Arcueid, random selection, Red Arcueid, Akiha Vermillion, MECH-HISUI
Fourth Row: Sailor uniform Akiha (blank if not unlocked), Satsuki, Len, Ryougi Shiki, White Len, Nero Chaos, Neco-Arc Chaos (blank if not unlocked)
Last Row: MECH-HISUI & Kohaku (blank if not unlocked), Hisui, Neco-Arc, Kohaku, MECH-Hisui and Neco-Arc (blank if not unlocked)