You can see on this platform:
Lesson 1: Get Started
Lesson 2: Table of Number Systems
Lesson 3: Binary Number System
Lesson 4: Octal Number System
Lesson 5: Decimal Number System
Lesson 6: Hexadecimal Number System
Lesson 7: Conversion from Binary to Octal
Lesson 8: Conversion from Binary to Decimal
Lesson 9: Conversion from Binary to Hexadecimal
Lesson 10: Conversion from Octal to Binary
Lesson 11: Conversion from Octal to Decimal
Lesson 12: Conversion from Octal to Hexadecimal
Lesson 13: Conversion from Decimal to Binary
Lesson 14: Conversion from Decimal to Octal
Lesson 15: Conversion from Decimal to Hexadecimal
Lesson 16: Conversion from Hexadecimal to Binary
Lesson 17: Conversion from Hexadecimal to Octal
Lesson 18: Conversion from Hexadecimal to Decimal
Lesson 19: Addition, subtraction, multiplication and division operations in the binary number system.
and
Number Systems Converter.