You could use something like the 1930s adding-machine in Barnet Museum shown above - but only for simple arithmetical operations! A modern calculator is more convenient and flexible :-)
☺ Get hold of a specification (syllabus) online or from a teacher. Example keywords for an online searches are GCE Edexcel physics specification. And It is helpful to have more than just your textbook, e.g. a revision-style book such as CGP or Letts.
☺ Before each tutoring session, read ahead to see what difficulties you'd like to discuss.
☺ At the start of the session, make sure you have everything you need.
☺ During the session, don't be afraid to ask if you don't understand any points being explained.
☺ Immediately after the session, go over what's been covered and do any tutorial assignments given to you while they are still fresh in your mind.
☺ Once you have covered enough ground in your syllabus, you will find past papers are invaluable.
Links to examination boards: