Certification for SAP - BW

Hi, I work as an business operational consultant and I am planning to take up SAP-BW certification. However, I am very vague on the types of modules that I would have to take. I was also wondering whether there might be any funding opportunities for myself to pursue this certification, as for I understand that the cost for this is quite expensive. Some companies would be willing to sponsor their employees to sit for these modules, however I did check with my employer and they do not offer such funding for their employees. Would really appreciate some supportive feedback..