Buy mode, go to the place where things are NOT sorted by room, and choose entertainment and skills. Subfolder hobbys and skills, there is your guitar for 600.
If you have LN and you are famous you can occasionally get one for free. (a way nicer one in my opinion)
Chat with our AI personalities
At the Theater.
Put the guitar in your inventory, then go to a public place and play the guitar.
get a music job but also practice your guitar
You have to have sims 2 university expansion pack. Heres my question: Is there anything else you can do? To get the guitar or something? Download? That's free?
Lots are out. The sims 3 university, sims 3 nightlife, sims 3 adventures, sims 3 generations... you name it!