If you wish to know How To create blog...You need to follow 6 Basic Steps.

1.Decide about your NICHE (any hot topic/ you having good skill in it)
2.Pick Your Blog name/Domain Name
It must be short and sweet and it should be Descriptive.
3. Technically short blog (Not heavy site/domain)
Please do some research on content management system i would recommend you "Wordpress" to make technically short blog.
4.Select Wordpress/Blog Theme
If you are running through short of Money go for Free theme or you can buy it. Please refere below sites for Themes.
https://wpastra.com/build-blog-with-elementor/
https://wordpress.org/themes/flash-blog/
https://www.divilayouts.com/
5.Create content that converts
Positive approach towards blog/niche,Do keyword research (Recommend you to do some keyword research on Pint-rest/uber suggest).
6.Promote you content and get traffic to your sites.
SPECIAL NOTE: Please Dont rush to get traffic using some illigal ways.
promote your content on below platform, hope you will get good and convertible traffic.
Pintrest,Google,facebook,Youtube,Forum Question & Answer,Guest Posting.

hope you got how to make blog.Please feel free to make call for any challenges.

Please Upvoke if you satisfied with answer.

All the very best...!!

Thanks..!!