1. Need to be less thin skinned
2. Try the search function.
Jacob has patiently answered questions here for many years, helped educate a huge number of people (including me) and shared his very specialized knowledge unselfishly. If someone should arrive here and ask a question which has been answered multiple times previously because they are too lazy to do a bit of background work for themselves, is it surprising that some here become a bit testy.
Instead of being hurt and grumpy, try searching, asking questions for clarification and learn some humility. That will carry you a long way not only here but in real life too. This is a site on the World Wide Web. It is hosted in super polite Canada, but frequented by multiple nationalities including many that call a spade a bl**dy shovel.