I had thought about contacting an administrator and volunteering to do a hose and fitting identification thread and make it a sticky in the hydraulics forum. But, I think that would be counter productive. Nobody knows everything, the secret is in finding the answers you need. I believe anyone with a tractor should own a hose and fitting catalog from their local hose shop. They could ID any hose and fitting possible, and would therefore, become very knowledgable with hoses and fittings. If you keep giving the answers, people become dependent on you rather than learning form themselves.
As far as "advice" goes, that is about as loaded for bear as you can get. The advice you get here varies, some is great, some is garbage. Who determines which is which? I don't know. Just look at my signature and you see my feelings on advice.