Ask Colin

Do you know a source of Technical indicators including their formulas?

I suggest you start with Technical Analysis for A to Z by Steven Achelis. He developed MetaStock charting software. The book mostly includes the formulas for the indicators as well as what they do and how to interpret them.

I understand there is also material on the MetaStock (Equis) website including formulas for MetaStock that could be adapted for exploration in Excell etc.