I'm new here and I would like to start learning how to trade btc/fiat or btc/altcoins.
I have no previous knowledge, so if you could help me out some tips or some link to learn from, I would be grateful.
So you are starting from a scratch, this will really be a long time of studying but please take all of this seriously. I will not suggest another guide since there are already linked threads above from this post and I just want to suggest that please READ READ READ and READ. Put some time into this and make sure you really understand what you are reading. Just give it a shot and soon you will be a succesful trader someday.
Hope you come back at this thread of yours.