So my friend wanted to learn japanese so I thought I can teach her the basics.

あ...ah い...i not like ih more like ii. う...u more like oo when you say it. え...e. お...o

か...ka. き...ki. く...ku. け...ke. こ...ko.

さ...sa. し...shi. す...su. せ...se. そ...so

た...ta. ち...chi. つ...tsu. て...te. と...to

な...na. に...ni. ぬ...nu. ね...ne. の...no.

は...ha. ひ...hi. ふ ...fu. へ...he. ほ...ho.

ま...ma. み...mi. む...mu. め...me. も...mo..

や...ya. ゆ...yu. よ...yo.

ら...ra. り...ri. る...ru. れ...re.ろ...ro.

わ...wa. を...wo. ん...n

So lets try and say this.

こんにちは(wa)。わたしのなまえは(wa)____です。(hello. My name is____)

So, well は has two sayings like ha and wa. When you say ha then you use it like はなをさかせよう。(lets bloom some flowers.) Or something like that. When you use wa then it continues or you use it for something similar to connichiwa. 

So when you greet somone then you need to at least learn how to say hello, thank you or my name is.

Hello ー〉こんにちは　thank you ー〉ありがとう　thank you very much ー〉ありがとうございました　my name is _____ー〉わたしのなまえは_____　nice to meet you ー〉よろしくおねがいします　　I like ___ー〉___が(ga)すきです

I know I know. I didn't teach you ga and stuff. Here we go again.

が...ga. ぎ...gi. ぐ...gu. げ...ge. ご...go.

ざ...za. じ...ji. ず...zu. ぜ...ze. ぞ...zo.

だ...da. ぢ...ji,di. づ...zu. で...de. ど...do.

ば...ba. び...bi. ぶ...bu. べ...be. ぼ...bo.

ぱ...pa. ぴ...pi. ぷ...pu. ぺ...pe. ぽ...po.

So those are in one group in japanese. This group is called ひらがな(hiragana). There's more like かたかな,カタカナ(katakana). かんじ,漢字. I will say kanji is the hardest. Because look.電気の下にいる私。(me underneath the light.) I don't know why I wrote that. Whatever.

Some of these you don't use very often soo, those are some of the basics.

I know there's more but i'm too lazy to think of basic stuff you should know.

I hope this helps a little.( *・ω・)ノ