I recommend attending actual classes, where you can mingle with other students and exchange ideas. In a class, students' talents can grow with one another's positive energy and encouragement. Follow my lessons to learn my own technique and tips, and to gain inspiration and new ideas.
In person classes are not always possible, however. Or perhaps you attend a class but wish to pick up more tips. The more sources of information the better.
Attend art shows and ask questions; I have found artists to be very helpful and willing to share ideas, tips and other information. Look at the art work. What styles do you like? How do you respond to the paintings? What type of work interests you? You will change interests, and grow over time as you are exposed by a variety of art.
Go online to YouTube. I have taken many "YouTube classes". Each artist has unique perspective and techniques. Watching the artists has been extremely helpful to me. I will list my favorite sources soon.
Remember - you have creativity within you. Art really is in the eye of the beholder. I enjoy watching different people look at my paintings. A person will barely glance at them, then zero in on one and start talking about it, saying "Oh, I have been to this place! I remember having a picnic with my grandma in just such a place. I love this!". It might not be anyone else's favorite painting; it has deep meaning to this person. Everyone in my life has his or her favorite, and they are all different. It's not whether the painting is "good" or "bad". It's whether one connects to it. A painting might be your best, technically, and people migh not "like" it. Don't take it personally. It just means it didn't spark inner feelings. This is the most important piece of information I can give you.
Go to About Me to learn how I got started. Finding the right teacher is very important for a happy, rewarding painting experience.