New players who wuld like coaching most often need to approach their club to be put in contact with an appropriately qualified coach. Unlike many other sports (rugby or netball for example), squash does not necessarily provide a weekly practise/training session.
Most clubs offer coaching for players of all levels, but you may need to ask first - it is best to contact clubs directly for information.
Alternatively, the coaching resources section of the Squash New Zealand website is rich with helpful coaching resources.
For those that don't have time, or prefer to receive tips from the comfort of their own couch, the link below from the Club Kelburn squash tips series may be helpful: