Welcome to the forum.
Indeed, as stated above it is probably better to invest in some lessons to see if you like the sport first. During that time you can then save some more money for kit.
I think spending a reasonable amount on kit is sensible as at the end of the day, you put your life in the hands of your wing and motor. If buying second-hand it is probably advisable to take along someone with a bit of experience and who knows what to look out for, again this is where an instructor can come in handy.
Stick around here and you will get lots of insight and advice, everyone is friendly and willing to lend a hand if they can. Teaming up with pilots local to you will also be beneficial in finding out about this great sport and you'll also have people to fly with once you take to the skies.
Good luck buddy!