Become a Professional Programmer
With Us

First you need to know 

Ctrl+A   = select all
Ctrl+X   = cut
Ctrl+Z   = undo
Ctrl+F  = find 
Ctrl+P  = print
Ctrl+S   = save
Ctrl+O  = open


Windows+E = open exployer
Windows+P = change screen
Windows+R = run pane
Windows+L = lock the screen

prtsc = screen shot
Alt+shift = chance language
ctrl+shift = chance language

Second you need to know 

1 Bayt = 8 bit
1KB = 1024 Bayt
1MB = 1024 Kb
1GB = 1024 Mb
1TB = 1024 Gb 


Document:
.txt
.doc
.docx
.xls

E-Book:
.pdf
.djvu
.epub
.htm

Audio:
.mp3
.mid
.wav
.wma

Video:
.mp4
.mkv
.avi
.3gp
.wmv

Application:
.exe
.msi
.bat

File Archives:
.iso
.zip
.rar
.7z

Third you need to know

File system:
Fat16
Fat32
NTFS
eXFAT
ReFS
Ext4

OS:operating
.nix
UNIX
FreeBSD
Linux
Macos
Android

2)
Mc-DOS
Windows NT
Windows 95
Windows 98
Windows xp
Windows ...

Windows 10