How do I save a rosemary plant? Should I re-pot it? What soil should I use?

Rosemary comes from the Mediterranean so it likes poor soil, good drainage and lots of sun. It you tap it out of its pot and the roots go round and round, tease them out or they will continue to grow that way . Just move it into a slightly larger pot. Don't use too rich a compost and make sure you put stones or broken pieces of clay pot (if you have any) into the bottom of the pot for drainage.