Bentuk tim uji coba. Terus uji coba prototipe Anda. Catat dan tangani bug berdasarkan tingkat prioritasnya. Tambahkan fiturnya. Uji coba tiap fitur setelah Anda menambahkannya. Kunci atau finalisasi fitur Anda ketika tahap alpha sudah selesai.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
In the alpha stage, the testing team can and should be small. A small group will help you get focused feedback and gives you the ability to interface with testers one on one. Every time you make updates to the prototype, new builds are sent out to the alpha testers. The testers then try all of the included features and also try to break the program, documenting their results.  If you are developing a commercial product, you will want to make sure that all of your testers sign a Non-Disclosure Ag