Yes, some math is required.. However, most is not that difficult and with the use of reference material, ie: Machinery's Handbook, that is full of tables, formula's that will provide you with guidance.. I'am less than a novice at machining and I was able to work the math to cut internal acme threads on my phone calculator. So, fear not and jump!
Military Manuals Army Machinist Course -1988- Part Five of Seven-Shop Calculations 2015-05-17
The Army course on Machining and machine metal work. Part Five of Seven, Shop calculations