I have been using ERPNext for an year now. It is a powerful and solid platform. However at times it is difficult to figure out how to do things as they are not in manual although the platform is capable of doing it. Forums are helpful but have information which is very scattered. Lot of times people figure out things with help or themselves after trail and error. If we have an online wiki/manual, wherein people can put in the what they have learnt in an organised way, it will be helpful.