These forums is a good place to start. You need to start threads with pointed questions for a very specific task showing what you have tried, your results, what you expected vs what you got and what you are stuck on. Your question above is far too general for anyone to offer any assistance.
If you truly do want someone to help you with all of the tasks, eg proper paid tuning training then this is something that various companies can offer however there are a few requirements. Wideband, knock ears, fuel pressure monitoring equipment and a dyno. Do you have access to all of the above? If so