My recipe for perfect macarons (link below) is what I would consider to be as fool-proof as is possible. It has full step-by-step instructions and troubleshooting for perfecting macarons, along with recipe links for many flavours.
Click here for the recipe for perfect macarons.
pistachio, lemon and raspberry macarons
Blackcurrant and mint macarons
smoked salmon & horseradish macarons
Bitter orange macarons
Jaffa cake macarons
Peach Bellini macarons
macaron tower: with caramelised blood orange & cranberry flavour
Ginger macaron snowmen
blueberry & raspberry macarons
A full index of all my recipes can be found here.