I am a beginner in crossword puzzles, where to start and how will I manage to solve them easily?

You should start with the simplest Scandinavian and small classic or Italian crossword puzzles and whenever you do not know something, look it up in the encyclopedia or dictionary so that the effort you make to find it helps to memorize it. You can write down the words and definitions you find in a notebook until you find that your level has improved. Then you can move on to more difficult or more complex crossword puzzles with a greater degree of difficulty and more encyclopedic knowledge. Ideal magazines to start with are the monthly magazine KRYMMENES LEXEIS, the bi-monthly GRIFOS SKANDINABIKA, and the weekly magazine SABBATO.