If you want to become a musician for fun, for profit or for any other reason, there is no escaping the fact that a little bit of money will need to be spent. Time and money are just two of the investments you will need to make to do it properly, and it is fairly important to get value for money in the early stages. Being able to learn the guitar means knowing how good you sound, and your first guitar may not need to be expensive and classic – but it does need to be of a sufficient quality to sound like a guitar. Otherwise you could be extremely naturally talented and not know it.
It is possible to find decent second-hand guitars, and this may be your best option as a learner. They will occasionally be passed on by guitarists who have learned the important tricks, and need to add something to their sound that can only be achieved with a more expensive guitar. If you take this approach, it may be worth asking to hear them play – if they sound good on the instrument, then so can you with enough practice. Once you have your guitar you’ll need to move on to other useful items. For example, if you are going electric, you’ll need a decent amp – otherwise you’re not going to hear yourself play.
The best bet is to ask around in music shops and – on occasion – ask the person who is selling you the guitar. If they want to keep their amp – which is highly possible – then they may well know somewhere good to buy one. After all, they bought their own.