1. Know your meter, and what it does and means.
2. Know white balance
3. Crop your frame as tightly as possible.
4. Think and shoot beyond and outside the conventional.
5. Have fun.

6, 7, 8, 9, and 10 - Get a fixed, fast lens.

Err. hard to pigeonhole some 5 best tips, as different beginners have different styles and natural inclinations.