There is plenty to learn here. I recommend going through the FAQs as a great place to start. Browse around and read whatever interests you, then ask questions or contribute where you have something to offer. Welcome!
There is a huge knowledge base here on INGO, and I've learned a lot from the members here. Just use the grey matter between your ears to filter the wheat from the chaff and you'll be amazed at what you'll learn and the generosity of a vast majority of INGO members!
As mentioned above the FAQ's and the search feature are your friends...and to !!