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
Ginger macaron snowmen
smoked salmon & horseradish macarons
blueberry & raspberry macarons
Blackcurrant and mint macarons
Peach Bellini macarons
Jaffa cake macarons
macaron tower: with caramelised blood orange & cranberry flavour
Bitter orange macarons
A full index of all my recipes can be found here.