I am a rap artist and very well known in my home town but I want to branch out and become well known in the world what do I need to do to get there? Also I would like to build a home studio and I need to no what consist in one. I want it to be a replica of an professional one.:) :) ;)

You need all your instruments, amplifiers, any special effects equipment like a wa-wa or slide
The recording equipment with dubbing, mixer, etc...

Determining What You Need for Your Home Recording Studio - For Dummies

How to choose recording studio equipment.

YouTube - home recording studio equipment techniques

A very cheap home studio doesn't need much. A small enclosed space. A bathroom, my brother used to use my walking closet (which was annoying.. he can't rap well... ).. he laid the tracks differently. Some times just listened to an instrumental on an iPod and recorded his rhymes on a mp3 with recording features. Then mixed them on the computer with audacity... once again a cheap way of doing it.