Need some assistance with my mac

Whats up everyone, im proud to say i purchased my first mac today. So im still attempting to get used to it, as using a pc for my whole life has caused me to get stuck when using a mac. However i have a few questions that i would appreciate some answers.

First: I'm running OS 10.2.8 (jaguar) and i was wondering how and what opperation system i should upgrade too? my specs are as follows

512MB Memory
800 MHz Powerpc G4


Second: Im trying to set up rsbuddy, and this version of OS does not have the option in the dropdown bar where the blue apple is in the top left to search for updated software, so how will i be able to get java since i cant download it from the website?

 

Holy hell... 512MB memory and 800 MHz? Jesus, buy 2 gigs of memory and 4 gigs of RAM. You must have a simple Macbook (the cheapest of them all). In that case, RuneScape runs extremely slowly, as Macs in general are made more for Graphic Design, such as creating things in Photoshop, rather than gaming. If you wanted a laptop for gaming, you should have went with Dell's XPS or Alienware.

 

its an old 2003 imac, bought it for 25$ lol, hoping i could bot an account or 2 on it

 

Oh wow, wow. Not going to happen, sorry man. ANY computer from 2003 isn't going to be very successful. Especially a Mac.

 

Everyone else is pretty much right. You won't be able to run a bot and the OS very well, if at all on 512mb. You basically have a netbook.