Stay and work in China

I am Wasim 27, a Ghanaian nationality and speaks only English as my foreign language, i am a Graduated Graphic Designer as my profession and holding a Diploma of Graphics and Web certified by IPMC,  an international recognized IT college in Ghana. i have about 9 years experience in the field of my profession.

      I am now living Ghana to stay and worked in China and want to know the basics of challenging and difficulties involving strangers who are currently in a stay in China and also how difficulties can i face as i don't have any relative in China and want to know the final preparation before i reach the country.
Thank you..(Moderated: Please avoid leaving your phone number on the forum for security reason)