Hello、munejyuka。

Not just programming、Have you ever wondered what you can do to solidify what you have learned?。

review regularlyOf course it is important、I would like to suggest another method。

teach others what you have learned

gain knowledge from books、I understand what someone taught me at that moment.。

but、When I tried to use that knowledge、Have you ever wondered, “Huh?”。

The reason is、don't really understand、I thought I understood、Or maybe you just forgot。

Then、One way to check if you really understand is to、

"Teach others"

Why not try doing that?。

this is quite effective。When you try to explain what you have learned to others, they may not be able to do it.。
Also、If you are unable to answer properly when asked a question by the person you taught、it's that you don't fully understand。

If you don't have the situation to teach someone、Why not be conscious of listening to stories or reading books with the intention of teaching others?。
Or on Twitter or blog、It might be a good idea to say something like, ``I learned this today.''。

vice versa、When learning from others、If there is something you don't understand or are confused about, be sure to ask questions.。ask questions on the spot、Let's clear up the confusion。

Because you'll learn things you don't know、It goes without saying that it is difficult to completely make something your own just by hearing it once or reading it once.。So patiently, over and over again、Making an effort to master this is the most basic of basics.。

As a means to that end、

"Teach others"

Why not try working with this in mind?。

Let's do our best together! !