Hi xraffyx welcome its nice to have you along. To start off I would read the articles in the main site
www.torquecars.com then in this forum you will find more car specific articles and tips and feel free to ask ANY questions - no questions are considered silly and we welcome new tuners and are all willing to share our knowledge and pass on our tips.
I would start simple if I was you then work your way up to the more complex
mods. Are there any mechanics/engineering courses you could get into - this is a fantastic way to gain tuning experience.