You will be surprised to see how helpful, how forthcoming they are with very personal details of their life - something that no book or teacher can provide but which are the most important learning tools and aids for you as future astrologers. You must work hard at gaining their trust, obviously, and you must abide by the strictest professional and ethical code of conduct. Being the faceless milieu that internet is, you must exercise caution regarding the quality of information that you are receiving. Quantity often runs counter to quality and it is easy to run into sources of misinformation, as well, some provided accidentally or carelessly while others maliciously too. This teaches one to be cautious and prudent and one avoids hastiness, checks out data more carefully and learns to pick out discrepancies in charts and other details and such caution is a valuable asset to any astrologer.
People approach astrologers with a variety of reasons for readings.
There are those that are really at the end of the rope and looking for helpful advice. Some of these are really in need for a friendly shoulder for counsel. Some are marginally interested in jyotish, academically, and become quite skilled at posing a request for reading in the garb of technical curiosity. Other than gaining an ability to identify such tendencies, there is not much help that you can provide to these people. Some astrologers prefer to ward them off by one of many ways while others politely oblige and move on.