Google the keyword "ICT4Dev". I think it's pretty much what edw519 already said: Build something of value and you are already making a difference. I think the

Google the keyword "ICT4Dev". I think it's pretty much what edw519 already said: Build something of value and you are already making a difference. I think the step one for you is to figure out what community (target user) you feel connected and want to serve. Then, step two is to find a solution that A) you can realistically build; and B) it is sustainable (resource-wise) The world is full of problems for you to solve. Just pick one and do it!