Learn guitar ( can be serious )

1) which type can we buy? Classical vs. Acoustic, etc..?
2) how long is the practice daily?
3) is it totally fine to learn from youtube / DIY ?
4) how long does it take to pass ABRSM Grade 5 /guitar?
5) how long does it take before joining a band or making performance e.g. playing publicly in a party or concert?
6) Any good web sites or place for purchase?
7) What should be my reasonable budget ?

pish wanna know too

There must be some great guitar players here...

What do you mean by which type can we buy?
It depends on what song you wanna play
you won't buy an acoustic guitar for heavy metal song, right?

No heavy metal at all, even in band setting.
Maybe light rock or folk songs.
Some classical music solos if possible.

我好老實講啦 好多你既問題都係冇意義嘅問題
買咩結他其實睇你想玩咩歌
最簡單就係你搵幾首你想玩嘅歌
入面用咩結他基本上就係你嘅target
至於要學幾耐 一日練幾多依啲根本好睇人吸收能力同練習效率 冇一個標準答案
上網學結他唔係唔得 以初學嚟講我覺得係冇咩問題
只係好多時我地學到一個位係開始到樽頸位嘅時候
有跟出面學就會有人幫你睇翻個問題起邊
俾到更多既意見你去改善 幫你突破個樽頸位

Classical, there you go, u said it urself