Carefully. Aside from that, you do it the same way anyone else would. There is no special process for special colours.
no, it won't bleach your hair but it will dry it out!
It certainly does.
Bleach
You don't. Bleach is incredibly harmful for your hair. Shave it off and get a wig intead.
You cannot bleach your hair purple. Bleaching your hair can help lighten your natural colour if you have dark brown/black hair. Whether or not you bleach your hair, you will still have to buy purple hair dye.
you may have to bleach your hair then dye it caramel___________ Caramel highlights on black hair are usually done with bleach and 20 V. developer, and a toner, if needed.
Lemon juice won't do much for black hair. If you're interested in lightening it, you'll need to use hair bleach lightener.
yes, but you'd have to bleach it first
You can dye it with hair products or you can bleach it
Yes but you should bleach it first.
You should bleach it first. Well, it really depends on what color you want it, but usually you bleach it. I don't recommend bleaching black hair though, because bleach damages black hair more than any other color. You may never get it back to your natural color.
You can leave bleach on the hair for up to an hour. After this it will not work. You have to make a fresh batch. The more time that the bleach is out in the air the less time you have to put it on the hair. The ends are dark because there is more of a build up of colour there. You will have to do this on a few separate occasions. Because your hair is black the bleach will take longer to take the colour out. Black changes to red, the orange then blonde, it does take longer to get black out.