I do have my own right handed electric guitars in the studio which you can use. They have clean strings and are set up professionally to be easier to play.

However if you want to own your own guitar, then below are some hints and tips to help with your purchase.

If buying a used guitar make sure that the guitar is free from damage to the headstock or the frets. Run your fingers along the side of the neck and make sure that the frets are not sharp or sticking out in any way. If its electric, ask the seller to plug it in to make sure it works as it should.

Always carry a spare set of strings (especially the thin e string as they do snap when worn).

Purchase a tuner - they are next to nothing for a cheap one.

Purchase a case from your local guitar shop so the guitar does not get wet on your way to your guitar lesson.

Before coming to your guitar lessons have a think how and when you can commit time to practicing - the ideal option would be little and often.

I recommend an electric guitar and little practice amp to start with. However if you do have an acoustic guitar, if needed, it can have the strings lowered at your local music store.

Use a strap when practicing even when sitting down. This will ensure your strumming hand is focused on strumming only and not holding the guitar in place.