Sudoku is a popular logic-based number placement puzzle. The objective is to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contain all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which typically has a unique solution.

1. **Choose a Theme**: Some Sudoku puzzle books or games come with themes, such as travel, animals, or sports. If you have a specific interest, you might enjoy a themed Sudoku puzzle book.

2. **Select the Difficulty Level**: Sudoku puzzles come in various difficulty levels, ranging from easy to very hard. Choose a level that suits your skill level and preferences.

3. **Look for Attractive Designs**: Many Sudoku puzzle books and games come with attractive designs and layouts. Look for books with colorful covers, interesting graphics, or unique puzzle layouts.

4. **Read Reviews**: Before making a purchase, read reviews from other Sudoku enthusiasts to see what they have to say about the puzzle book or game.

5. **Consider the Format**: Sudoku puzzles can be found in books, magazines, apps, and online. Consider which format you prefer and choose a puzzle book or game that matches your preferences.

6. **Check for Extras**: Some Sudoku puzzle books or games come with extra features, such as tips for solving puzzles, bonus puzzles, or other games. Consider whether these extras are important to you.

7. **Price**: Finally, consider the price of the puzzle book or game. Prices can vary widely, so shop around to find a Sudoku puzzle that fits your budget.

Overall, the most important thing is to choose a Sudoku puzzle that you find attractive and enjoyable. Whether you prefer a themed puzzle book, a challenging puzzle game, or a simple Sudoku, there are many options available to suit your preferences.