Basic mathematical operations:
Addition of 4 and 5: ++++ > +++++ <[->+<]
Subtraction of 6 from 10: ++++++++++ > ++++++ [-<->]
Multiply 2 by 4. ++ [->++++<]
Divide 15 by 5. +++++++++++++++[----->+<]
Up next, some harder stuff. Maybe also I will write about non bf related things.