Need some help with SAP BW

I need SAP BW Help from time to time. This will be ad-hoc help. Not some project where you can expect to make 30 hours a week or something like that. If you are interested in this arrangement, please tell me your experience with SAP BW in ECC and if you have experience in APO that will be great also... (Budget: $15 - $25 USD, Jobs: Data Warehousing, SAP)