Some days ago I got a message from a beginning artist from Canada. He told me that he is learning watercolor and oil painting and wants to develop his skills to paint as an artist for his career. He was asking me if I could give him some advice.
The only advice I can give him is to paint, paint and paint.
There is no fast way to learn, but you will see: the artistic journey is wonderful.
Of course visiting classes is also a good help. But when this is not possible there is the wonderful Internet. There are so many wonderful forums like Wetcanvas.com or ArtandArtistry.com which are helpful for each artist, where you can show your work and where you will get often good help to your work, advice for art business, Infos about colours, mediums, techniques and so much more. Books about painting are also very helpful. It is great to have a good library. On Amazon.com you will find many books about painting. Studying other artists work is also helpful. Look at the old masters or other artists which work you admire. So many artists today are writing blogs and share their knowledge for free, show Demos, do Videos on Youtube, but you always have to paint, paint, paint.
Regarding blogs from artists: Just today I visited the blog of Carolyn (Carolyns Paint Blog) and found this wonderful thread where she told about her experience to paint a landscape together with Ron Guthrie. I very much enjoyed reading this thread and that she shared how they worked on a Landscape. Although I am no landscape painter but I always like to learn something new, which will always be helpful for my own work.
Ah ... my own work. I have here the next step of my figurative painting.

I have started with the tree. For the tree trunk I used the colours: Raw Sienna, Alizarin Crimson, Winsor Blue (green shade), Burnt Sienna, Burnt Umber and Sap Green.
You see there is only slow progress, but I am also working on a beautiful Rose painting on my Rosesblog.