If you are an expert or a professional field you can signup on these website and help people online.
Experts at Live Person
LivePerson is a unique service that matches people who have questions to the people who are qualified to answer them.
As a registered Expert on LivePerson, you will be listed according to your professional expertise and will be available for hire by any LivePerson client. You receive all the tools necessary to communicate with clients and colleagues. You can set your own per minute rate. You have the option to answer questions by text,chat or phone.
Just Answer Professional
If you are an expert in your field check out Just answer.com. They hire professionals to answer questions from customers. You can work on your own schedule, give advice and earn money. A customer asks a question and offers payment for the answer. Experts can earn 25-50% of that payment, depending on their skill level.