I live in Brazil too and bought a R$120 old HP computer running Windows XP on MercadoLivre. Works decently enough for a Minecraft server after an upgrade (4 to 8GB of RAM). Old computers are great for price and they're good if you can upgrade them.
For general purposes, get something better than what I bought since it is not the fastest (even though it runs the Minecraft server software alright, it still lags). Maybe upgrading with an SSD would help performance.
uhh none other than free (in price) google drive on a few gmails, but i dont use it.
i might eventually pay for cloud storage (when i can afford an option that won't use my data in ways i dont want it to be used) for backups. for now i do backups on my devices with syncthing. it would be wise to have some backup storage in a different location, though.
Treat others how you think they would want to be treated, but not at all costs.
You don't have to like everyone, and not everyone has to like you. Although, being liked by others generally leads to having a better life.
Avoid lying or "distorting the truth". But, sometimes lying is necessary, like to keep a friend's secret.
Some of my existential thoughts
There are no permanent consequences other than death (I do not believe in an afterlife, although I find the concept interesting). There are no rules to follow, just temporary consequences you may have to deal with. You can make up your own rules and follow them, or not follow them.
Perception is just a tool used by your brain (a small part of the universe) to process the chaos that is the universe. A similar universe could be described by a very complex particle simulation. That's really cool.
The passive voice is often used.