Can someone read this kanji?
A girl I talk to on Instagram is visiting America and she said: targetほんとうに面白いよね〜！楽しすぎて長居????????
#target #vacation #instalike #instapic #instadaily #instphoto #LA #ameria
All I can read is hotoni and sound out the hiragana. Also does anyone have advice on how I can learn kanji. I don't want to learn all of them just the ones that are commonly used.

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Answer

In this webpage you can write the kanji and it will give you the meaning: http://jisho.org/
I started learning kanji with this website: https://www.wanikani.com/login , you have to pay, but I think the first level or first two levels are free, so you can see if you like it or not. 
Also, there's this book "Remembering the Kanji" , you can find it in PDF, it's very simple and funny.
Hope this helps (:

Answer

When I can't read a kanji I usually copy and paste it into http://jisho.org/ It's actually a really useful way to find the reading of a kanji or to look up the meaning of a word.
The kanji in the first sentence (面白い) is omoshiroi. In the second, it's tanoshi (楽し) and nagai (長居).

So: Target hontou ni omoshiroi yo ne 〜! Tanoshi sugite nagai.