Once you've learned something, review it regularly to make sure you don't forget it.It is not necessary to actively watch a lesson you've already seen. However, it can be useful to have one on in the background so you can tune in and out as needed.

Revise in the background

Find out the ideal time you can dedicate to learning, and also resting. Don't try to push yourself and to fill your mind with too much information in one session. Try to learn over multiple days to let the information sink in.

Time matters

Once you've learned a new skill, try it out for yourself. You will make mistakes. When you do, review your notes and keep going.
You'll learn the most from your own early errors.

Practice on your own

Watch the lesson through once. Then watch it again while following along. You can also follow along from the start.Take notes. Write down important steps, tips and tricks.

Follow along and take notes

Watching online tutorial videos can become addictive. Keep in mind that you are trying to learn something, not get distracted.
How long you would be able to study depends on the density of the subject and the level of your knowledge about the subject.

Don’t binge

Set some time aside to see what courses are available. Take advantage of any free lessons, watch the introductions to their classes and see if the instructor will be a good fit for your skill level and speed.

Find the right instructor

Have an end goal in mind when you're learning. 
<ul>
<li>What do you want to do with this information?</li>
<li>How is it going to improve your life?</li>
</ul>
Even if you just want to do it for fun, find a project you can't do without learning the skill.

Have a reason to study

There's a lot wrong with the internet, but one of the best things about it is how easy it is to learn new skills. It's actually one of the big reasons I have this job: I taught myself photography and photo editing, and I got my break writing about it.

Don’t binge

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5. Encourage Questions