Neck doesn't look twisted... I'd say get a set of new strings... usually $6.55 a set. You don't need any tools. Just loosen the tuners on the neck, take the strings off and put new ones on. On that note... do you have a tuner or a good ear because guitars are tricky to tune for newbies. Tuning if you don't know is done Bass to Treble as E A D G B E. Once you get a string tuned its easy to tune the rest.