10 THINGS TO HELP YOU GET STARTED WITH OIL PAINTING (Short Version):
1. PAINTS:
Red (Alizarin Crimson)
Yellow (Cadmium Yellow Medium or similar)
Blue (Ultramarine)
White (Titanium White)
Burnt Umber (optional)
Burnt Sienna (optional)
Ivory Black (optional)
2. BRUSHES:
Nos. 2 and 4 Brights (Short flat bristle brushes)
No. 12 Flat Bristle Brushes
No. 12 Pointed Round Sable or Synthetic Sable Brush (for lines and details)
3. MEDIUM:
Linseed Oil. (You do not need a separate "drying agent." However, Liquin, Liquin Fine Detail, Galkyd, Galkyd Lite are mediums containing alkyd drying agents. I prefer Liquin Fine Detail.)
4. SOLVENT:
OMS (Odorless Mineral Spirits).
5. PALETTE:
A disposable paper palette pad
6. SUPPORT:
Stretched gessoed canvas
7. EASEL:
Anything with which you can prop up your support (canvas) so that it is at comfortable angle and height.
8. CLEANUP:
Paper towels (e.g., Viva, old cotton tee shirt)
9. VENTILATION:
The odorless fumes of OMS can make one ill. Make sure the room in which you work is well ventilated with fresh air!
10. IMAGINATION:
Take an oil painting class.
Visit your local library for beginning oil painting books.
Artist and Designer, U.S.
I don't where you are at in your education, but if you can take a weekly oil painting class it will alleviate any potential frustration and you will learn much more quickly.
For the long list and much more detailed version of the above 10 point short list containing additional resources, see my answer here:
https://answersrip.com/question/index?qid=20130104164020AAtduc3