Some questions regarding Younger Fuþark runes (unless otherwise noted)

1) Are runes still used to write inscriptions, or are they only transcripted to latin characters, (A.K.A. is there any use for learning them?)

2) Where might I learn to read/write runes?

3) What is the difference between ýr and reið runes? I know there is some difference in pronunciation, but does that exist in old icelandic? there is only one character for it. (Also where would I put it if I were writing an inscription?)

4) Dotted runes. What do they signify and when would I use them if I were writing an inscription?

5) Is there use in learning other Fuþark systems, can one learn (Do people even know?) Proto-Norse (What I assume Elder Fuþark is for)

6) For 'e' when would I put iss, and when ár? I see they can both represent the sound.

Thanks for all the help,
Ljóma Austmaðr