I would be so brave to say....Don't bother with reverse card before you are confident in the original Tarot.
Reverse card is something that have been introduced much later.
To learn 78 card and be confident to read them is quiet a task....to increase this to 158 at once will possibly destroy your fun of it....at least it will take much longer time.
Your understanding will grow with each Reading you feel you have done right...do like you will do in order to drive a car...learn the car....take the trailer paper later
