Welcome aboard. Check out the Getting Started and FAQs over there---------------------->
Your question about buying equipment is pretty much relative...it really depends on your expectations and where you want to go. If all you need is a diversion, like playing against yourself, the free equipment works for that. To be honest, I am not aware of anyone playing at a higher level, and is competitive, that has not invested in better toys.
Suggest you learn how the site works before advancing too quickly. Many have been frustrated after posting only their best scores then finding themselves in the Master tier before they were ready.
Be careful or you just might get hooked.
Joey