How to quickly learn the front/js/layout for bekendste?

For example, firm and sure step tread in the direction of the backend, like administer, write requests to lift the server. One problem - and I'm all don't like the front, and need at least some knowledge of the front.
As in a short time to understand the minimum stack front to sanity to write something and understand what is happening in this area? Should I learn the bare js/DOM/AJAX with jQuery or leave it in fashionable React/Angular? Know CSS3 by heart, or enough bootstap'a? Again, I have neither the time nor desire to read any books, I want to simultaneously consolidate all of this practice, simultaneously studying js and his ilk. I repeat, I do not need deep knowledge of the standards and fashion trends. It is banal it is necessary though something to understand, because it's necessary, but not such a deep level. There is no time, and without the need to know bash/unix/docker/nginx/sql/plgsql/postgres/python/django/flask/torndao-twisted may go or java.
June 10th 19 at 14:30
4 answers
June 10th 19 at 14:32
Solution
pimp for a month these three site courses html, css, javascript, ajax, php, and you will always be happy.
And never download the excess, and in parallel will learn to understand others code
https://htmlacademy.ru/ -employers appreciate your progress
https://webref.ru/ - a complete reference
https://www.sololearn.com/ - short basic need knowledge plus a game-competition on knowledge of the code. It is advisable to pass on the Android version because the mobile version of Russified and there is a possibility to increase your ranking and compete against friends from social networks on knowledge of the code :)

Udachki! :)
P. S: Quality Full-stack is always higher in priority for projects and clients than just backing endsec.
Talking on his experience as full-stack for the fifth year.
June 10th 19 at 14:34
Solution
Thank you all, but for myself, found a bundle:
learn.javascript.ru
developer.mozilla.org
A good correlation between complexity and interestingness. Not too difficult and not too easy, I mean not to chew, what variables and loops
On the other hand, is not so quickly pass, where the week on all of this at best and without a bootstap', AJAX and jQuery, although I don't know whether this jQuery
June 10th 19 at 14:36
If we accept the theory of simulation of reality - you can try to hack it and upload his brain any stacks.
If you fail to follow the established procedures: pumping practice.
June 10th 19 at 14:38
Go to the intensives htmlacademy if you have money
For free you can get everything you need and nothing more. The only thing - a little bit (about 300 rubles per month) to spend on it so it is unlimited in the day to have attempt answers to the exercises. It is really necessary. - Tiana_Marquar commented on June 10th 19 at 14:41

Find more questions by tags FrontendWeb Development