Welcome to steemit, there is quite a large group of Nigerians on steemit, @wafrica and #wafrica tag can help a lot on learning the ropes, but so can the newbiewresteemday group, or greetersguild group, there are a lot new user groups to assist new users in learning the ins and outs of steemit. If you have any questions or need any assistance don't hesitate to ask.