First, I'd hook my car up to another car and jump it, if that doesn't work, bring it somewhere and get the battery tested. If it's not the battery, buy four new spark plugs, take out the old ones and replace them and make sure the plugs are in the cylinders really well. After that, your starter is connected by either two 12' screws or 14' screws (both in MM as all imports are in the metric system) and is annoying as fuck to get out (You'll need an extension for sure). Ebay that shit (don't pay retail for a starter) and replace it, not a hard job at all, just rather annoying. If you don't know how or don't have the tools (a ratchet with an extension) then don't pay some more than 40$ to do it, I'd only give someone 10$ myself, but I know a lot of people that work on cars.