In fact, CCNA is only the primary certification of Cisco system certification. As long as you master some basic network knowledge, buy a Chinese version of CCNA Learning Guide, which is very suitable for beginners to learn by themselves. For example, the chapter "Subnet Division" is really wonderful, which is better than some domestic online textbooks. I believe you will feel the same way after reading it. If you want to attend the training, of course. The training fee is usually several thousand yuan. One advantage of participating in the training is that you can do more experiments. General training institutions will have some Cisco routers and switches for candidates to do experiments.

Learn what to learn? These two questions were very clear when you bought the textbook CCNA Learning Guide. There is a list of exam objectives in front of the table of contents of this book, which lists the exam contents in detail. After each item is completed, there are summaries, exam points, written experiments, hands-on experiments and review questions. In a word, this book can completely guide you how to learn.

Learning route and how to learn: This book is characterized by a gradual cycle, that is, if you want to learn the content behind, you must first master the content of the previous chapters, that is, to understand and master the content behind, you need the content of the previous chapters as the basis. That is to learn step by step.

In a word, if you want to learn CCNA and don't want to go to a training institution for training, then you'd better buy a Chinese version of CCNA study guide. Again, it is very suitable for beginners, especially those who don't have any network knowledge reserves!