After looking up a lot of information online, there are also recommendations for various products. Then, in the mixed information, it's really not easy to truly find the right product and information for you to get started. You need to identify the truthfulness of the information and recognize which shortcomings of the products are hidden in various promotional articles... It can be said that there are various risks, and every step is full of surprises. Based on my personal experience, I summarize the following feelings to help my friends who are preparing to dive in.