Don't aim to learn everything. Learn to be productive and get to the point where you do things you do fast enough. Vim itself has enormous amount of functionality, so it is useful to read vim reference manual. It comes with one and you can get one in PDF as well here:
Also read entire exhaustive help at least once so you get the idea of what is available (it can be done in one weekend, don't try to memorize too much just familiarize yourself with content, then later when you wonder how would you do that in Vim you will remember you read something about that once).
Vim has really great indexed help that you can access directly:
:h
:h index
:h <topic>
and there is also grep for help to search entire help for matches
:helpgrep <search_term>
No matter what you do understand that you will get slower before you get faster. At first expect your productivity to go down seriously, because everything will be strange and new. But persist with it and force yourself to use it. Once you get to the nicer bits you probably will not want to go back. After 6 months of regular use, you will not be able to back, every other editor will feel dumb and will frustrate you to no end (be careful when typing email: ESC key dismisses the compose dialog in a lot of email programs without asking you anything :D).
As for UNIX shell and tools, again get a good BASH tutorial book and learn the basics of interactive shell, learn how to do loops, globs etc. The rest is then all about learning individual tools, not shell itself, which is rather small command interpreter. Look in your /usr/bin and /usr/local/bin for commands and read their man pages. Experiment a lot with them and look at examples of creative use of these.
Back in the early 90s I had a year long course in vi (not Vim) but started using Vim on Amiga 500 days, and after 20 years I still come across new commands and ways to do things. This is the beauty of Vim, you grow with it and it never stops to amaze you. But it is a skill that you keep for a lifetime. It's like learning to touch type, you do it once and you type efficiently for the rest of your life. You may get faster or slower at times in your life but you are always faster than hunt and peckers. Same with Vim, dumb editors come and go, but none ever approach the completeness of Vim.
ftp://ftp.vim.org/pub/vim/doc/book/vimbook-OPL.pdf
Also read entire exhaustive help at least once so you get the idea of what is available (it can be done in one weekend, don't try to memorize too much just familiarize yourself with content, then later when you wonder how would you do that in Vim you will remember you read something about that once).
Vim has really great indexed help that you can access directly:
:h :h index :h <topic>
and there is also grep for help to search entire help for matches
:helpgrep <search_term>
No matter what you do understand that you will get slower before you get faster. At first expect your productivity to go down seriously, because everything will be strange and new. But persist with it and force yourself to use it. Once you get to the nicer bits you probably will not want to go back. After 6 months of regular use, you will not be able to back, every other editor will feel dumb and will frustrate you to no end (be careful when typing email: ESC key dismisses the compose dialog in a lot of email programs without asking you anything :D).
As for UNIX shell and tools, again get a good BASH tutorial book and learn the basics of interactive shell, learn how to do loops, globs etc. The rest is then all about learning individual tools, not shell itself, which is rather small command interpreter. Look in your /usr/bin and /usr/local/bin for commands and read their man pages. Experiment a lot with them and look at examples of creative use of these.
Back in the early 90s I had a year long course in vi (not Vim) but started using Vim on Amiga 500 days, and after 20 years I still come across new commands and ways to do things. This is the beauty of Vim, you grow with it and it never stops to amaze you. But it is a skill that you keep for a lifetime. It's like learning to touch type, you do it once and you type efficiently for the rest of your life. You may get faster or slower at times in your life but you are always faster than hunt and peckers. Same with Vim, dumb editors come and go, but none ever approach the completeness of Vim.