When deciding to get acrylic nails you really need to think about the time and money. Depending on the salon, your first application can take up to an hour. To maintain them you should then get a refill every 2-3 weeks which can take around 30-45 minutes. Again depending on the salon your first set can set you back up to $65 and each refill up to $40 (including polish).
You also want to find a salon you are happy and comfortable and stick to that one salon. You want to make sure everything is cleaned, sterilised and they care about what YOU want. A good nail technician will ask how long you want them and what shape you like. I personally prefer mine kind of long and I like the squared off look.